I have a small 3 drawer shelf unit made by Sterlite and sold by WM.
http://www.walmart.com/ip/Sterilite-...-of-4/15442451 By the way, that price is for set or 4 of them. WM sells them in the stores as individual units.
The dimensions are: 13.5"L x 10.87"W x 9.63"H
I can't fit rulers in it, but it will hold almost everything else. I end up with that size area of junk by my sewing machine, but very disorganized, if I don't put this unit by me. When I go somewhere, I take it with me. I keep meaning to make a carry case for it so the drawers won't come open.
I, also, have a tool bag I got at Home Depot that works really well too. It has a lot of pockets where things can be stood up in it. I use this to transport the items, but once I start working, my stuff gets strewn everywhere. The drawer organizer is easier to open and shut and know in which drawer each type item is. There is a smaller version that will hold rotary cutters and more. I like both sizes.