I do not like greasy, slimy seafood. So, I never add meat to the pot while my seafood is in the pot. But, I do love meats boiled in seafood-boil.
It is very easy to boil any meats after the crawfish, crabs or shrimp are done.
Sheepshead, black drum etc. wrapped in a cheese cloth, added to the pot at the moment you turn off the fire, makes the best fish cakes!
Red and yellow bell peppers are fully ripe at these colors and taste fantastic when added to the soak.
Peanuts take a while to boil. I let them soak for at least an hour. They are my favorite non-meat in a boil. I usually boil six or seven pounds, refrigerate them and snack for days afterward.
Mussels are kinda cheap. Into a bowl, I melt some butter, add a little of the boil water, then add some mashed garlic from the boil . Then, I swish the steamed and slightly open mussels thru this mixture. This is some good stuff! Get crazy with the boiled garlic!! Dipping some hot french bread into this mixture ain't bad either.