One of those things I'd meant to make for a long time but only just happened to need, a microphone stand. It has standard 5/8"-28 thread on it.
It is a BIG PRINT, 140mm across, just barely enough room in a Rep x2!
To make it heavier, I paused the print in the middle and filled the bottom with fine gravel.
I don't publish sources on thingiverse anymore, so the .scad is available on bld3r. http://www.bld3r.com/obj/5902390750347264