I built cabinets with doors on them. I liked the idea of hopefully being a bit more dust-proof, and I wanted to keep some locakble so that as my kids get older I can keep stuff out of thier mitts.
I used some cheap "cabinet grade" plywood from HD. I haven't seen it there in a while, but it is some far-eastern birch type of plywood. I am noticing some (not much) delamination of the top veneer on some rip lines, but I think I paid about $25 a sheet.
It took a while, but I am so happy with the result. I have just about everything in the cabinets now. If I get a free day sometime soon, I'm gonna pull everything out, and reorganize, and I think I can get the rest in.
I keep small benchtop machines (belt/disc sander, spindle sanders, routertables, etc) stowed away, all my "construction" hand tools, clamps. I made all of them with adjustable shelves so I can change things up as I need to. I also put electric in a couple. One is my small power tool storage area, and I have 4 battery chargers in there.
I probably have some rudimentary plans somewhere. I think I have about $170 in hardware (pulls, hinges, shelf supports) and I forget how much playwood. I want to say I have between 15-20 sheets of plywood in the cabinets. so, that would be another $400. and, it was a fun project, too.
-hammlm