Well not exactly audio gear, but I've built a cabinet (basically a box with no front or back) to hold/support my two AVR's.
It's 3/4" smooth finish plywood.
The top and bottom pieces are screwed to the sides using my little Jeg's device, and of course glued. I added some full round 3/4" trim on the front.
Since space is an issue, I have to stack one AVR on top the other. So the box will contain one AVR, and the other will rest on top.
I will be painting it black, hopefully I can start on that today after flushing all the dust out of my shop with my leaf blower. lol. ...or maybe just the shop vac. We'll see.
No pics yet as it's unfinished, and in reality it IS just a box, but sturdy enough I think to hold my +30 Lb AVR on top.
I will also be adding some round furniture feet, already purchased with attaching screw brackets. 2.5-in (Diameter) x 1.5-in (Height) Bun-ft Maple Sofa Table Leg is how it's listed at Lowe's.
Paint will be flat black acrylic latex.