i use this for food: http://www.armstrongcricket.com/chow.htm

this: http://www.armstrongcricket.com/waterb.htm
OR
this for water: http://blaberus.com/FORMgallery5.htm#WaterCrystal (the water crystals)

and fruits and veggies as available--just make sure to take them out when they start to mold or you get stank and fruit flies.