While I initially figured that enemy hamsters flying through walls or decorative interior objects would rarely happen when the game is played as intended, I noticed this happening more often as the map sizes became larger which gave the hamsters more ground to build momentum on. Also, intentionally sending the main hamster flying across the map could easily get it to clip through the walls and travel a decent amount of distance before eventually falling down enough to end the game.
To prevent hamsters from clipping through walls and interior objects, I added colliders to the entire room and all of the objects in the scene. Even on the kitchen objects. If you get the player hamster on the kitchen table or counter, you'll be able to maneuver the hamster around and maybe even get trapped in the sink (sink is located on the right side of the counter, right behind the refrigerator. It is almost completely hidden from view but you can see a portion of it if you really look for it and move around a lot. On levels with large platforms you'll be able to see the sink more easily). Now there will be no more hamsters flying through walls and disappearing mid game.
Now we are balling on a different level!