I haven't seen these in musician circles but I was looking for an adjustable ball clamp dealie and saw these at in use at my mom's church. They're small, cheap, and lock down. (Cheap surprised me - they come from the photography world).
They seem to be almost all 1/4-20 so to put a mic clamp on one you need a 1/4-20 to 5/8-27 (not the normal 3/8-16 adapter)
Amazon has them but they're much cheaper on eBay. (The Tama RW has a 6mm thread - it's just kinda stopped at the first thread until I can tap or find a 1/4-20F to M6M adapter) I'm using it to clamp my metronome (and Peterson Bodybeat Pulse - awesome bit of kit) at my "practice singing into a microphone while playing guitar station)
They make a bunch of other stuff but the 2" dog bone, the 5" arm and 9.5" arm are probably the most useful for us.
( I don't really care if you guys see my mess but you can't see the black hardware against a busy background)
There's about $20 in that clamp and I could probably do it for $13 without the extra ball joint I added trying to figure things out
They seem to be almost all 1/4-20 so to put a mic clamp on one you need a 1/4-20 to 5/8-27 (not the normal 3/8-16 adapter)
They make a bunch of other stuff but the 2" dog bone, the 5" arm and 9.5" arm are probably the most useful for us.
( I don't really care if you guys see my mess but you can't see the black hardware against a busy background)
There's about $20 in that clamp and I could probably do it for $13 without the extra ball joint I added trying to figure things out