To help deal with putting frozen rats in the freezer here's what I suggest:

Suggest keeping them in a tuppleware/rubbermaid type plastic container, only one you cannot see into without opening it. Use a sharpie to write "snake food" on every side of it so no one accidentally opens it. Explain that since you can't see into it, people won't have to ever see frozen rodents whenever they open the fridge to get something to eat. This has worked great for me with my flatmates who don't want to see a row of tiny icicle rodents every time they get a midnight snack.