At feeding time I put my smaller snakes into tupperware containers with air holes in the lid. The larger snakes get an empty slot in the rack. I generally leave them alone, checking in on them every 10 minutes or so. I find that it stresses them out less than having me hovering over top, and it's also easy for me to give them an hour to decide if they're hungry. After an hour I might try teasing with forceps if the snake hasn't eaten in a while, but usually I'll just put him/her back and see if any of the other snakes want an extra morsel.

The only exception is my wandering garter; she has a huge water bowl (bigger than a pie tin) and sometimes I'll put worms in there for her. She seems to have a better feeding response that way, and I have not seen her pulling them out of the bowl.