These are Sterilite 1986 models (41 quart) that I got at Walmart. Get a solder wand while you are there for about $10 for putting in ventilation holes.

I use belly heat and each tub has a 1 foot section of 11" flexwatt and all three are controlled with one Ranco thermostat. You can get all of that equipment at http://www.reptilebasics.com



I use newspaper and the hides are plastic bowls with entrances soldered out to make hides:



Same tub for an adult (all my aspen has been replaced now with newspaper):