I keep my crickets in a tupperware like bin (about the size of a 10 gallon tank) with a screen top, rarely do they get out. The sides are roughed up (sandpapered) to provide extra climbing space, all the way to about 2" from the top and I have a cheap envelope holder with egg carton standing vertically (if that makes sense). I give them cricket food and baby carrots. I can fit a ton in there and they last a long while, depending on their size/age of course. Just clean it out every now and again with a tiny wisk broom and dust pan and it doesn't even stink