I have a used golf bag for sale which I used for carrying my old EQ5 mount and accessories like counter-weight and slo-mo knobs. The opening is 8" in diameter.
Those interested can PM me to pick up from my place. It is a bit dusty but 100% functional.
Price? Up to what you think is worth. Just pick it up first. When the Admin makes an announcement for donations to keep this Singastro site running, just make any contribution and consider that as payment, OK?
A brand new bag like this can set you back by maybe 70-100 bucks.
Kay Heem