I have so many rats in the freezer right now I'd probably be better off writing what they are as opposed to who they're for lol. But I gave such specific instructions! Lol "Can you thaw two of the small fuzzy rats. Should have black and whites in the bag." And he pulls out not two, but four white medium sized rats. There's only one bag with black and whites. He blamed it on being half asleep lol.

A chart is a good idea also. I have one of those dry erase boards I could use to write when I need to thaw, I always forget lol.