Moose, for just a little more money (or less, depending on the seller), you could buy three Brownies and get both cameras and spools. Don't despair. Instead of looking for the empty spools, look for expired 620 film or the cheapest Brownies (or other brands, natch) out there.
Oh, I've got plenty of spools. This was just a heads-up for everybody else. $3.33 each, including shipping, is quite the bargain, which is why it only lasted half an hour.
I did get some of mine by buying some of the Art Deco Brownies.