I have a player that praises everyone’s shoes, NPCs, enemies, other players…

the other players are getting really annoyed with it, so I need to try and take him down a peg in game. I’m thinking of doing something shoe related. Does anyone have any ideas? 

Um, no.

To clarify, is this player just complimenting shoes in-game and out of game? Not sure that's something deserving of being taken down a peg, but I'm not at the table...

Regardless, it's not a good idea to handle real world issues with in-game punishments. If the player is being annoying, talk to the player and ask them to stop. They may not even know it's annoying anyone. 

No, he is only complimenting shoes in game

Tell him to knock it off, or else you are going to give him the BOOT, and SHOE him right out of the game! 

Don't try to solve in-person problems with in-game actions. Just have a talk. Something like "Hey, the shoe thing is getting on people's nerves, could you tone it down?" should work wonders.

Quote from jl8e >>

Don't try to solve in-person problems with in-game actions. Just have a talk. Something like "Hey, the shoe thing is getting on people's nerves, could you tone it down?" should work wonders.

 
Tell him: “Hey man come on, you are disrupting the SOLE of the game here.” 

An incredibly vain Boot mimic.

Yeah, I think this deserves an IRL talk. a little 'we get your character is obsessed with shoes, but can you tone it down a little, it's spoiling the game for the others', should help. 

Private talk..tell him to toe the line. 

every time he compliments someones shoe, it animates and makes a melee attack, +5 to hit, 1d4 bludgeoning damage on a hit...

Well... since apparently nobody in your group wants to be mature enough to actually just speak up and say "The shoe thing is getting annoying to everyone", there's only one thing I can think of to do.... 

You have approached the gates of the town of Discalceate. The other travelers waiting to gain entry seem to be giving you a wide berth. You finally notice everyone else is barefooted. As the guards finish ushering the wagon ahead of you in, they bar your path. One of them calls out,"Halt! The covering of feet is sacrilegious." Under his breath he mutters "And disgusting." Trying to remain professional, the guard continues: "You may place your coverings in that chest and retrieve them when you leave town."  All the guards surrounding you appear to be barely able to stand looking at you. One guard glances at your footwear and begins to vomit. The first guard grimaces and says "Or just leave... your choice... just make your decision quickly." 

Quote from Rathkryn >>

Well... since apparently nobody in your group wants to be mature enough to actually just speak up and say "The shoe thing is getting annoying to everyone", there's only one thing I can think of to do.... 

You have approached the gates of the town of Discalceate. The other travelers waiting to gain entry seem to be giving you a wide berth. You finally notice everyone else is barefooted. As the guards finish ushering the wagon ahead of you in, they bar your path. One of them calls out,"Halt! The covering of feet is sacrilegious." Under his breath he mutters "And disgusting." Trying to remain professional, the guard continues: "You may place your coverings in that chest and retrieve them when you leave town."  All the guards surrounding you appear to be barely able to stand looking at you. One guard glances at your footwear and begins to vomit. The first guard grimaces and says "Or just leave... your choice... just make your decision quickly." 

 

 Love this. 

The rest of the party told him to stop tonight, so we’ll see what happens next time we meet up

Depends on party level - polymorphing and then having a PC wear the individual on a sewer crawl might be in order... 

Having the party go anywhere "sacred ground" such as to a temple or the like where social expectation is shoes removed might work.

Also, having a Hafling Home 2 Tavern and inn where all guests are expected to take their footwear off for the duration of their stay at Home might be in order... failure to do so may very well get the character targeted for all sorts of shenanigans, such as the offending players footwear being stolen...

Quote from Alf_BattleMonkey >>

I have a player that praises everyone’s shoes, NPCs, enemies, other players…

the other players are getting really annoyed with it, so I need to try and take him down a peg in game. I’m thinking of doing something shoe related. Does anyone have any ideas? 

 It sounds like you have a bigger problem. This guy sounds like he treats the game like it is simply a big joke. That may work at some tables. It most certainly does not work at others. What is the response of the other players when funny man starts up?

Maybe his shoes are replaced by mimics next long rest?