Today I decided to check the hide temp, change water, and make sure cleaning wasn't necessary. Nim started climbing towards the CHE right after I removed his lid, so I had to pick him up while doing these things. He did fine, but it took a few tries to get him back inside the bin. At least I now feel a lot more confident picking him up while he's moving. I'm trying to leave him alone, but with the small size of this bin I think I'll often have to handle him when the lid comes off, just to keep him inside.
I'll have a shipment of pup rats for him this week, but I'm considering feeding him a f/t fuzzy from a local pet store this weekend (no store in town has any sizes between fuzzy and small.) I have a feeling he'll take it, and if he does I might try moving him to a larger plastic bin in the next week or so. Nim climbs a lot, and the space for it is so limited in this bin that I think he'll do better if moved to a larger one. I know the small bin can help with security, but if it's forcing me to wrangle him extra to fit him inside I feel like it might have the opposite effect.