Social Skills: Munchkin

Munchkin Fresh Food Teether

Hello, my little boy just turned 7 months old. I received a two pk. of the Munchking mesh fresh food teethers for my shower and have still yet to use them. My baby is eating stage 2 foods three x's/day and loves it! He is also heavily teething right now. I am not sure what to put in this thing. I have heard strawberries, but not sure of what else. I also heard of putting meat in them? Ew..what kind? Do your babies like this product? Thanks!