ChangIGuess

There's also a mime which drops a haircut down a long rope in the tainted cliffs section

Interacting with the casino door as Monoco gives him an outfit

Exactly, theres a Paint Cage too. Near the merchant for the 2 outfits, there was also a mime which dropped me a haircut

If you continue on straight from the yellow spire wrecks, you'll encounter a boss which drops a weapon and picto

There's also a mime giving a haircut in a cave near the expedition 44 journal