Funny, I’ve been thinking about a mixer case to let me fit another row and/or actually be portable
But I’d have to put my deeper rackmount stuff elsewhere if I did.
It’s just an OnStage Stands 12U tabletop rack stand, RS7030. The back of the legs are propped up on thick corrugated cardboard pieces that came with some Ikea furniture to bring it close to vertical.
It’s open all the way around, which was nice for plugging stuff in and terrible for travel, protection, and mounting busboards. So I cut some plywood to make partial sides and a back. My Focusrite Saffire Pro 40 in the top 1U keeps anything from falling in.