xkimx had posted on melissasues's post about putting a teething biscuit in a mesh feeder.
I tried it yesterday (poor kiddo woke up with 2 more teeth!)...and it is the best idea! He can't choke, and his hands stayed pretty clean!
We buy the EB kind, a little long for our mesh feeder so I snapped the end off. He was able to munch on the whole cookie until it was gone.