Under Bed Storage Unit

Does anyone have a template or pattern to making an Under the bed storage drawes or anything like that. I don't want to get boxes because I want to make them my own height. I have a doublebed and I would like to make the underbed storage unit about a foot high from the floor. I don't want it on casters. What material would I use for this and what kinds of things would I need to make drawers and doors. Would I have to make supports on the sides of the box that is around the bottom of the bed and would I also have to make slats to hold the boxsprings for support? Thanks, Debbie Allen