Any comfy office chair with either no arms or fold-up arms will do. But the super cheap ones will usually have the cylinder fail, especially if you are heavy. I'm not heavy but my cheapo is only a year old and it slowly sinks down as your sitting in it.
I would want wheels for sure but I still like a perch for my right foot. A wah on top of a board is perfect.
Those drum stools are handy to have around. And how does every guitar player have a drum stool anyway? I don’t remember stealing it but I use it a ton. Mostly for this.
wish there was a low chair for floor usage while I’m fiddling with the rack stuff, cables etc. Legs hurt while sitting on ground too long like putting kid toys together at Xmas.
I try to stand most of the time at self practice with a strap because it prepares me to play out; endurance, posture; angles of arm and should change a bit from sitting to standing.