I have a compact setup in the back of a two-car garage that includes a MoonBoard, then, as the other two walls of a sort of "igloo," a 10-degree overhanging wall and a 20-degree overhanging wall, linked by a small square of roof. It's not a big setup, but I've made it hold-dense, for warming up and traverses that can be linked into the MoonBoard. This can make for 50- or 60-move circuits that culminate in a MoonBoard crux—good training value!
The spray walls were feeling tired, though, and I was having trouble setting circuits that held a consistent difficulty throughout. So on a whim I decided to buy some Triangle Mini-Volumes. I'm very glad that I did—the versatility, three-dimensionality, and visual appeal they've add has been an amazing upgrade, and as soon as I put four up I ordered five more, so that I could have volumes on both spray walls as well as the roof, all mounted with Simple Crimps (sets No. 2 and No. 3), plus the new Golfus pinches and edges.
The volumes have a reliably grippy texture, streamlined, sleek visual appeal, and a low-profile that is key in my small space. Straight up, I love them, and am not sure why I didn't get some sooner. Meanwhile, the moves I've set on the spray walls have gone from "blah crimping" to cool underclinging, big shoulder rolls, distant reaches to gastons, you name it. They're also very affordable and easy to mount, and the holds screw into them nicely too—good T-nuts.