To go in a completely different direction ...
Having switched "full time" to euphonium recently, I felt the need for a stand on which to set it when not being used -- and one that I MIGHT at some point using during band rehearsals or concerts (space permitting). Not wanting to spend a lot of money on this, I looked around to see what I might have suitable for holding and protecting my valuable (to me) $750 Mack Brass (Yamaha 641 knock-off) euphonium. I quickly espied the guitar stand I'd bought for my bass guitar (which I never really got into playing). Hmmm ...
It wasn't quite satisfactory as it was ... but close. Deploying the stand put the bottom supports just a bit too wide for the euph. Cutting a flat piece of aluminum (from Lowes) that was sitting around in my garage/shop, and drilling a couple of holes for sheet metal screws resulted in a stable configuration for the euph. Chopping off (with Mr. Hacksaw) some unnecessary forward bits of the support rods yielded a compact and double-duty stand that works great for the euph and also the bass guitar. It folds to be pretty much flat.
The stand is an On-Stage stand I got from Sweetwater (GS7462B A-Frame Guitar Stand, currently $36.95). It ain't a K&M, but it works well for me. Pics are attached. On-Stage seems to have approximately 200,000 stands of various sorts and sizes. Still not sure I'd want to put it where stumbling clarinet players could encounter it -- but then it seems virtually impossible to defend against that without something like electric fence.
Gary Merrill
Wessex EEb Bass tuba (DW 3XL or 2XL)
Mack Brass Compensating Euph (DE N106, Euph J, J9 euph)
Amati Oval Euph (DE 104, Euph J, J6 euph)
1924 Buescher 3-valve Eb tuba (with std US receiver), Kelly 25
Schiller American Heritage 7B clone bass trombone (DE LB K/K10/112/14 Lexan, Brass Ark MV50R)
1947 Olds "Standard" trombone (Olds #3)