I planned to make my cloth box wall-mountable, but for the time being I will be working out of my new office, and I didn't want to mar the walls (as you can see I'm still taping - I didn't have the heart to put four NEW screws into it!) I opted for a solution similar to that of some other builders (Dean May, Jeff Wilson, et. al.) and just made a few minor modifications.
First, I only have one leg at the moment - this is a temporary support while I figure out where I'll ACTUALLY be building the next few years, at which time I will be designing the table to drop down and hook onto a work table, giving me a bigger surface to cut fabric on. The sawhorses are also temporary.
Second, my front lid is mounted slightly offset from the bottom of the box. This allows it to fold down flat on the sawhorses I currently have it on, or whatever shelf/table it may sit on in the future. This prevents me from having to have the box flush with the front lip of a shelf.
Finally, my latches are two chest latches on the top of the box to help keep the cheap-a** utilitygrade plywood from warping and exposing the cloth to dust. I cut notches into the top of the lid that the latches hook onto.
I intend to eventually install a paper tape measure along the edge of the lid to make measuring things out faster, or simply install a self-healing cutting mat for rotary cutters, as these have markings on them already.
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Last time I went all out making a huge cloth box, and even though I used 1/2" plywood, it was heavy and also clumsy to use. The lid dropped down to make a cutting area, which seems like a nice touch until you have to cut large pieces. It was rough, and annoying to use. This time I applied the KISS principle (Keep It Simple, Stupid). I just need something to get the job done, and the setup you see below does this with standard closet shelving brackets. This produces a dual-use storage area - the cloth is mounted on closet rods, and the shelves can hold extra rolls of cloth, scissors, measuring tools, and etc. I'll mount another pair above the current two to provide storage for peel ply and plastic, and I can pull the plastic down to keep dust off the cloth.
For the cutting table I reused a work surface I had built a year ago. I initially planned to use this for the plane, but since I built new jig tables I didn't need it any longer. This is just a sheet of hardboard on a sheet of plywood, and like the jig tables, the base is built from 2x4 lumber (the only cost of this step). I'll marked cutting lines on the table at some point. Note that this produces a HUGE cutting surface, and can serve double-duty as a utility workbench when it comes time for chores such as wiring.