Tetrium was talking about this picture.
The difference is that i stack them in wooden blocks with cuts in them so they do not fall and/or touch each other and i can take any card in a second.
Only problem is the longer cards like voodoo5 and voodoo rush do not fit, they are laying behind the rows.
I do a lot of benchmarking and other stuff so i don't like to put them too far away in boxes etc. I do that with my motherboards, they are stacked in a cabinet in plastic boxes and anti static bags.
asus tx97-e, 233mmx, voodoo1, s3 virge ,sb16
asus p5a, k6-3+ @ 550mhz, voodoo2 12mb sli, gf2 gts, awe32
asus p3b-f, p3-700, voodoo3 3500TV agp, awe64
asus tusl2-c, p3-S 1,4ghz, voodoo5 5500, live!
asus a7n8x DL, barton cpu, 6800ultra, Voodoo3 pci, audigy1