Looking for stupid, useless or crazy mod ideas.

Hello! I am looking for wacky, stupid, cool or useless mod ideas for my mod StupidAdditions, now on Curseforge! When I say 'useless,' I don't mean entirely useless, just something funny or annoying to deal with. I'm pretty much good on ores and toolsets, I have a biome already, so what I'm mainly looking for is mobs, blocks, tile entities, music discs, advancements and more. I recommend you play my mod first just so you can understand what I'm trying to get at here.

Thank you very much!