If you use an aquarium, you'll also need a wire rodent cover to prevent inventive mice from escaping. Wire cages can be used, but since rodents like to dig, be prepared to clean up bedding that has been tossed out from the surrounding areas. Mice are easily bored, and will need to be provided with entertainment. One, two and three level housing units can easily be placed inside your aquarium, which will help to stimulate your mouse and also allow him to establish a colony. Play wheels, balls and mice toys are also sold in pet stores.
Bedding provides some insulation, warmth, and helps to absorb waste matter.
Wood shavings make a good choice for mice, though you should avoid cedar or pine shavings, as the oils in the wood can irritate your mouse's eyes and skin. Aspen chips or shavings, shredded paper, unscented paper towels and unscented toilet paper are all oil-free, and make excellent, safe bedding choices for mice. Bedding should be changed once a week. Water should never be given in a dish. Food often depends on the individual mouse's tastes.