See if Ikea has anything you can use. Years ago I bought a pair of nightstands ($90 shipping included, haven't seen it in years now) that made wonderful equipment racks (top/bottom/sides are 1.25 inches thick, overall 20.5 inches by 20.5 inches by 16 inches deep, inside 17.25 inches clear, several sets of holes for 0.75 inch thick shelves, each came with one shelf). Also came with casters (I used the post as spikes). So borrowing the shelf from one I was able to hold (4) full sized components (2 of which could be very heavy) and have a leftover matching stand to put next to my listening chair.