@stragu I always heard them called "film canisters"

@stragu back before most photography was digital, you had to put blank film rolls into your camera which you had to send in to companies developing the film roll into actual photos. These rolls came in these tiny cute plastic cups which were very useful to store small stuff once the photos were developed. I still have some ancient ones around to store seeds for example 😁 @birdsarah

@paul_cS should not be too stressful no! they're only in there for a matter of seconds, and it's the last thing we do before releasing them - entire banding process goes quite quickly, and they're inside a dark bag (calms them down) until we handle them