Banana hotdogs. Have a banana with ketchup and mustard and a bun. I bet they can’t eat half of one. It’s so gross.

Smelling salts. You can order those on Amazon for cheap.

Some cheap canned meats from the dollar store

You can order the really gross tasting sodas like ranch flavored soda

Beanboozled. You can order those on Amazon as well and just have them do five spins. There’s a chance they get a good flavored bean, but I really good chance they also get a bad bean.