I used to
LUG one of these
bulky thrones around just more gear to carry around all the time until I wised up and just used what ever they had at the gig, I carry a nice memory foam pillow works great just in case,..... less is more.
Another interesting idea.
I've tried chairs where I gig. Problem is, they are all way too low...even at the lowest setting on my keyboard stand.
I would usually need to be boosted two to three inches when I use one of the chairs at a gig. Maybe this cushion would do that?