We're always looking for CD storage solutions for the die-hard physical media adherents out there, so we stopped when we came across this $75 DIY project from ReadyMade.
These wall-mounted shelves have basic, utilitarian good looks and save you floor space as well as money. You can change the look and create a more subtle effect by painting the wooden shelves to match your walls.
ReadyMade's shelving system uses a hardware store variety wall bracketing system and copper wire to suspend and cantilever the non-trivial weight of 1300 compactly shelved CDs from your wall. (Just make sure you actually find the studs!)



