Kevin, I purchased a sheet of MDF SLATWALL, and ripped it lengthwise for two 2'x8' lengths. Then I bought some of the Slatwall guitar hangers from a music store. They have left-right angle adjustments. This gives me 6 rows high of slots to offset the heights, and as many guitars as I can fit in 8' on EACH of opposing walls. Works GREAT, although I still haven't mounted the panels since I moved in
Tooooooooo many other irons in the fire right now
Oh, you can also get a gazillion different brackets from store fixture outlets for doing many other things.....absorber brackets, shelves, equipment hangers, headphone hangers, clothing racks,......er......the list is endless, and you can modify most of them. The come in plastic, clear plex, and millions of metal ones. I have a ton of em from working in a Store fixture manufacturing mill. I even modified a couple for hanging the rear surround speakers from. Makes for moving them temporarily easy. Same with the other stuff.
fitZ
PS, Slatwall comes in a plain MDF for painting, or with melamine, or sometimes you can find it with plastic laminates on it. Thats what I have. Silver laminate.
Then I ripped some gloss black laminate strips, and slipped them into the grooves. Looks great. Actually, I custom cut the slats in a decorative outline to be part of some wall graphics that hang from the hangers too. Came out nice. I'll post some pics as soon as I get em hung on the wall.