Here are some pictures of my loft and basement that show how my musician boyfriend and I have displayed his plethora of guitars (and one strange, round, single-string instrument that I'm not sure how to pronounce or spell, and he's not sure how to play)...The guitar hangers on the long corridor wall were purchased for $5 each on eBay, about half of what all the local music stores wanted for them. When you're dealing with this many guitars, every dollar counts! Ours came painted black, but they are also available in natural wood so you can paint or stain them as you like.
The loft hallway shot was just an impromptu move on my part: "Let's just stick this case here for now...oh...it actually looks kind of amazing." The fan coil unit is behind that wall, so we weren't supposed to drive nails into it to hang anything. This was a quick solution, but I really liked the contrast and scale of the black case on the tall, narrow white wall.
The other photos show the most-used guitar in a stand by the sofa for early-morning serenades (seriously), and an old electric on another wall that picks up the colours in a rare, signed concert poster from Japan that I had custom framed.