I had to install a mated queen into one of my hives and I couldn’t find a proper queen cage, so I drilled some 1/8-inch (~3mm) holes in a pill bottle and put the queen in that instead. Here’s what happened:
IMPORTANT NOTE: I would normally not release a queen into a new colony after only two days of sitting in the cage. But this queen originated from this hive and the bees were already familiar with her scent. It normally takes 5-7 days for a colony to feel completely at ease with a new caged queen. A queen released after only two days could easily be superceded by the colony.