Lid for tank so they will not escape. Although wingless they are quite mobile and can climb the sides of the container. Mouse bedding or wood shavings to line thebottom of the cage. The bedding should be changed periodically, especially if there is a high humidity level. A wood block or log for them to crawl on.
Roaches are more apt to exhibit aggressive behavior if there is an object present in the cage.
A tube filled with water and plugged with cotton. The cockroaches will drink water from the cotton and push it back into the tube to keep it moist. The tubes can be obtained from any scientific supplies catalog. They love rotten fruit so don't worry if it isn't fresh. Gwen Pearson, a Texas entomologist, has reared 5 broods of hissing cockroaches using a KenL-Ration Meaty Chunks and rat chow mix.