I have a small colony that 'showed up' in another culture years ago. What I'd really like to get are some of the spider beetles, they're even smaller but I saw a colony on display once and they're really neat to look at.
Well there is many ways.Simplist method[Although i don't use this method.] is to place papertowels and cardboard into a big fish tank and feed them cat/dog food.I keep mine in a dark sterilight thing.Works good.I even have a new species The black carpet beetle which takes 287-600+ days per generation!