I used the box my water heater came in. Had 7 chicks in it until they were 6 weeks old and it was warm enough outside to move them to the coop. Since my box was in the basement, which can get damp at times, I raised the box up off the floor on top of several paint cans. Worked great. As the chicks got larger I made slits in the side of the box and ran roost poles through them. I also had to make a "lid" so they wouldn't fly out - I used and old screen window and some bungee cords (this also helped keep the dust down a bit). I suspended the heat lamp from a hook in one of the rafters and adjusted the height with a length of chain to make it warmer or cooler. I used pine shavings as bedding and changed and refreshed as needed. I had the waterer raised up on a plank or two of wood and that helped keep them from playing in it and making a mess. I almost forgot! I lined the box with heavy weight plastic so the box is "like new" for this year's batch of chicks.