Wanted one of these for a long time, but they are a bit pricy, so I made one out of an old e-drum rack I bought used for about 30€, even had enough pipes and clamps to make two of them.
On my one kit I have it attached to the hihat-stand, on another kit I have it attached to a cymbal-stand.

Can't imagine I'll ever be going back to the old wobbly tripod snare-stands, specially when using a double BD-pedal or dual bass-drums.

If you can't find an old drum-rack to build one from, the parts themself can be bought at Thomann for about 100€, still cheaper than buying a complete rack (those I could find cost almost 300€).

https://www.thomann.dk/gibraltar_sc_gpr36_single_pipe_rack_36.htm
Cut up in three pieces, or buy 3 pieces that match if you don't have a saw

https://www.thomann.dk/millenium_detc_01_pipe_to_pipe_clamp.htm
you'll need two of these to connect the three pieces of pipe

https://www.thomann.dk/gibraltar_scgrsmc.htm
feet

https://www.thomann.dk/gibraltar_scrba_rohraufsatz.htm
this is where you place the basket from your existing snare-stand

https://www.thomann.dk/millenium_rack_clamp_black.htm
for mounting it all on another stand