I was playing around with water bottle caps to see what I could make and wooped together this thing:
Just a SmartWater bottle cap (3 cm diameter, 1.5 cm deep) with a small piece of cotton ball in it, then wrapped with clingwrap and closed it off with electrical tape. I can poke a tiny hole with a blunt tip syringe above the cotton for hydration. This is good becuase you can choose how hydrated it is and how large the cootn ball can be, unlike test tubes where they are always the same humidity. Meant for small species like Lasius, Temnothorax, Brachymyrmex, Prenolepis imparis, etc. from the queen to first few workers. Literally just made this so I'll have to see how it goes for the first queen to house it.
Maybe I can drill a hole in the side and plug it with cotton. Then when workers come, I can place it in an outworld and unplug the cotton, since I can't get solid food in there without taking it apart or making a too-big hole.
Thoughts and suggestions?