I’ve built all sort of stuff from synth desktop stands from Ikea parts like shoe racks, to rackmounts, to studio desk, to a Keystep stand from surplus wood as I wanted something to hold an ipad with the keyboard (at the time). It also ensured I got the right angles as many of the stands with shallow angles don’t impress me much. Sure they’ve got the looks… (sorry), but aren’t always uber practical, or even fairly priced.
Ended up with better stands for most things, but my main studio desk is built from wooden kitchen worktops, My floor rack is built from ply with added heavy duty wheels etc.
Sometimes necessity forces a bit of DIY if needing something specific.