I had a hard time finding simple shelves to store my bottles of glaze on, most shelves available are too deep and don't have enough shelves. this is a incredible simple shelf block that can be built for about 30$ in about 1/2 hour
you will need 12 6foot 1x6 boards, I picked these up at the local hardware for 2.80 each , 30-40 drywall screws (1 1/2 inch) a screw gun or drill is very handy, but if you can hand crank the screws in if you feel Manly enough
this version uses stock boards, whith no cutting. In my version, I ripped one of the boards length wise on my table saw, to make 2 furring strips, but you can just use one of you dont have power tools.
screw the boards together about 9.5 inches apart. the pint bottles I use are 8 inches tall. screw one of the boards to the back and run a screw through the back at every shelf as support.