In my never-ending quest to keep Baby Boy safe, happy, and entertained without the use of the Exersaucer or bouncy chair (may they rest in peace), I discovered a new trick!
I took a large Tupperware container and filled it with plastic kitchen gadgets I never really use (extra measuring spoons, egg cups, etc.). When I need to cook or wash dishes in the kitchen, I sit Baby Boy in the doorway with the container, and he has a blast digging through it and playing with (read: chewing on) everything, without sneaking away from me and getting into mischief.
Success!