My pack is an old Korean-made Compass fanny pack. I searched the internet and their logo is still on a few cheap backpacks on ebay, but no fannypacks. But there are others, such as a Kelty Cardinal or North Face Mountain biker lumber that might work, or you might try discount stores and army/navy places for some cheap off-brand that will hold your stuff.
I liked the idea of that Marmot Dry Rib Bag that MMendell had, since it's one less strap and not pushing down on your hip belt. But Marmot doesn't list it as one of their current products and the net retailers I looked at said they're sold out. My questions on it are: at 250 cu. in. for the large can it hold a DSLR and a second lens, filters and extra camera batteries? And how does it work? On every site that said they had it when I googled it, they only showed the same half-picture of it, so that was no help. Is it attached to the pack itself and worn behind? Or is it attached to a shoulder strap and worn in the front?