In my never ending struggle to reclaim some garage floor space, I decided that I needed a place to keep some of my lumber

After some sketches, I ripped up some plywood and began cutting and assembling the brackets:

Lots of brackets!
2"x3" cut for the spacers
Brackets assembled

After assembling the brackets, the 2"x3" vertical supports were attached to the studs of the garage wall:

The left side brackets are for shorter pieces of lumber
Making sure the brackets are level
All done!