Enchant

You touch an object. The object gets enchanted in any way you want. For instance, you could enchant a longsword to be a +3 longsword. You may only put one enchantment on an object at a time, but objects can can have multiple enchantments and you can make conditions for when the enchantment takes place. For instance, you could say "I enchant this longsword to become a +3 longsword, but only when [character's name] wields it and says the command word". This spell can only be cast once per 3 long rests.