Don' t know if you' re still looking, but I picked up a cushion at Wal-Mart the other day for about $8. It' s a round cushion, 3 or 4 inches thick. Has an inner tube inside. The camo cover unzips and there is a valve by which you can adjust the firmness of the seat. I' m shocked at how comfortable it is. Also completely quiet. The last " air" cushion I had was an HS Bunsaver that was noisy as heck & never felt quite right.

It has a loop that you can hook to your belt, so you could get by with one cushion for all your stands by bringing it in & out.