Step 1: What you'll need
a.) Rivet tool
Here is the one I have, it has pretty bad reviews but for this project, it was fine.
b.) 12 of 1/4" rivets, steel or aluminum - that is your choice
c.) 24 of #6 flat washers
d.) Leather hole punch
e.) 10 of 10-32 x 1/2" bolt and nut
f.) Length of 3/4" hook and loop tape (that's Velcro)
g.) Tub-size shower curtain. I used fabric because plastic liner will attract the sawdust, but I suppose that is a problem if you want to see the stuff in the shelves. Mine are used for regular storage, not stuff I use all the time. If you have bigger shelves, I guess you could use an old bed sheet.
h.) Drill with a 1/4" step-up metal cutting bit
i.) I guess you'd need shelves for this to work, so here's my shelves
j.) Oh yeah, also 10 of #10 flat washers