I keep a tub with a breeding colony of blaptica dubia roaches. Mist two times a day and feed strictly fruits and vegetables. I use a warmer for arthritis pain for heat underneath. With this colony I have roaches of all sizes to feed my knobtail geckos and never have to spend any money ever on feeders unless I want to treat them with crickets, waxworms, silkworms etc.
29g standard - carbon rilis
24"x24x9.5" cube - carbon rilis, 3 bbolts, cbs, crs, mischlings