Curve ball: this only applies to bows and crossbows and if it's not loaded a projectile that hits you will load it in, it works with fireballs too

Hot feet: turns lava into basalt and can only be found in snowy villages and their outposts, has same range to frost walker

Lava affinity: When you mine a block whatever drops won't burn unless you pick it up, only applies to pickaxes, shovels, and axes, can be found in any structure in the nether

Mastery: the amount of blocks the player mines with the tool if how many the tool mines but they have to be the same block and it's how many of that block it mines

Vein: Mines the entire ore vein, only applies to pickaxes

Explorer's instinct: applies to only maps and compasses, it will pinpoint the nearest structure if applied to a compass and will show a respected icon on a map

Miner's instinct: applies to compasses and points in the direction of the nearest ore block, only found in mineshafts, ancient cities, and trial chambers

Loyalty: I want it to apply to other tools as well and even armor and shields, if you die and they aren't picked up or destroyed you get them back after you respawn and take the same amount of time as a trident would

Bottomless: applies to buckets and you can collect multiple of the same liquid (lava and water) the amount will depend on the number the enchantment is (Bottomless #) with 3 being the best

Block charger: makes a block explosive, can only be applied to bows and crossbows

Shell cracker: any mob that has some kind of shell (shulker, turtle, etc) drops the amount of shell they're wearing (shulker drops shulker box, and turtle drops 5) 

Monster tamer: if you hit a hostile mob it has a 25% chance of becoming hostile to other entities (mobs and players), can only be applied to weapons

I want an enchantment for boots that multiplies the jump height every time you jump

Quote from I_m_moss >>

Lava affinity: When you mine a block whatever drops won't burn unless you pick it up, only applies to pickaxes, shovels, and axes, can be found in any structure in the nether

 Flint and steel!

Quote from TheMadGibber >>

Quote from I_m_moss >>

Lava affinity: When you mine a block whatever drops won't burn unless you pick it up, only applies to pickaxes, shovels, and axes, can be found in any structure in the nether

 Flint and steel!

 La-la-la-lava!

Druidcraft: Applies to boots, and bone-meals the ground you walk on. Can be bought from max level Farmers
Hard-Hat: Applies to helmets, halves the damage taken from a mace. Can be found in trail ruins.
Exoskeleton: Applies to chestplates, doubles the durability a weapon loses when it hits you. Can be found in strongholds or rarely in spider spawner dungeons. 
Hammer Space: Applies to leggings, gives an extra inventory slot, however it can only be used for a weapon. Can be bought from max level armourers. 

Shattered Edge: Applies to swords, and gives it a damage boost the lower the swords durability is. Can be bought from max level weapon smiths. 
Chisel: Applies to pickaxes, allows the pickaxe to be used as a stone cutter. Can be bought from max level stone masons.
Guillotine: Applies to axes, gives it a low chance to make mobs drop their heads upon death. Can be found in bastions and woodland mansions.
Ace Of Spades: Applies to shovels, allows the shovel to be used as a brush. Found in trial ruins and rarely in desert temples. 
Crowbar: Applies to hoes, allows the hoe to open iron doors and trapdoors without redstone. Found in woodland mansions and rarely in outposts. 

Anglerfish: Applies to fishing rods, and attracts all hostile underwater mobs to the end of the fishing rod. Can be found in ocean monuments and rarely in ocean ruins. 
Eyesights: Applies to bows, and causes arrows to operate like ender pearls, but you take the arrow damage. Can be found in end cities. 
Blot: Applies to crossbows, allows ink sacs to be fired to make burst of shadow, and glow ink sacs to be fired to make flash bangs. Can be found in shipwrecks.
Demolition: Applies to maces, turns all stone blocks within a creeper blast range near impact into cobblestone, dirt/grass into coarse dirt, and any block with a cracked variant into that cracked variant.
Spear of Longinus: Applies to tridents, once hit endermen are prevented from teleporting, moving or picking up blocks, but the trident is unusable until that enderman dies. Can be found in end cities.  

I would like more curses

curse of brittleness: opposite of unbreaking

curse of fickleness: if weapon, using it will transfer it to the mob you hit it with, if armor, it will transfer once the mob hits it. its still cursed on the mob tho, so you can get it back

curse of honor: the weapon will only work against mobs the same strength or stronger than you

curse of punishment: if you kill a baby mob with this, you get transported to the nether

curse of the ___ God (fill in the blank with a mob's name): this is unable to be used against the mob in the blank

Blitz: Applies to swords and axes. Every time you hit an enemy, the attack cool down decreases by 5 percent, up to a maximum of 100 percent decreased cooldown (aka you can spam as fast as you can click). If you miss, it resets. 

Bonecrusher: Applies to maces, gives slowness when you hit someone. Starts at 5 seconds, and increases by 1 second for every 5 blocks you fall.

Speedster: Applies to boots. While sprinting, you gain speed 1. Every 15 seconds, the speed increases by one level, to a maximum of 5. Resets when you stop.

Dive bomber: Applies to elytra. While flying, you deal damage to enemies when you hit them, based on your speed (similar to how arrows work). If you kill an enemy with the damage, any leftover damage goes to you (To prevent people from making instakill cannons with 83 boats).

Quote from Platyboss >>

Quote from TheMadGibber >>

Quote from I_m_moss >>

Lava affinity: When you mine a block whatever drops won't burn unless you pick it up, only applies to pickaxes, shovels, and axes, can be found in any structure in the nether

 Flint and steel!

 La-la-la-lava!

 Ch-ch-ch-chicken!

(I'd say to add a Boots of Swiftness enchant for the funnies but that's just Speedster)

Bane of The Decaying: Deals extra damage and poison effect to undead mobs like zombies, zombie villagers, husks and drowned.
Bane of The Boned: Deals extra damage and weakness effect to skeletons, wither skeletons, strays and bogged. 
Bane of The Thinking: Deals extra damage and blindness effect to villagers, pillagers, evokers, vindicators, wandering traders and witches. 

I just want to be able to add more vanilla enchants to more stuff, and maybe some higher-level ones idk

Gale Bellow: An enchantment that can only be applied to goat horns. When blown, it applies light knockback and a Slowness effect to all mobs within a radius around you (the level of the Slowness effect is determined by the enchantment's level), but the horn's cooldown is increased. Can be found rarely from standard trial vaults.

Parry: Can only be applied to swords. While you hold the sword, and have no item in your other hand, damage you receive from physical attacks is reduced by an amount equal to the enchantment level. However, the sword loses a tiny bit of durability when absorbing damage this way (1 durability lost per point of damage blocked).

Cleave: Can only be applied to axes. The axe deals additional durability damage to shields equal to the damage the attack would have dealt.

Careful Aim: Can only be applied to bows, crossbows, and tridents. While charging the weapon's ranged attack, your FOV zooms in slightly towards where you are aiming.

Caution: Can only be added to leg armor. While wearing this piece of armor, you do not break farmland by jumping/landing on it.

Unstoppable: Can only be applied to chest-plates. While wearing this piece of armor and sprinting, you gain greater resistance to knockback, and being hit while sprinting does not stop your sprint.

Padded: Can be applied to all armor pieces. While wearing armor with this enchantment, you take reduced damage from environmental hazards like sweet berry bushes, cactus, and powder snow. If you have this enchantment on every piece of armor you wear, this damage is negated entirely.