If you're talking about the spacers for aluminum reels, J-Corder was making some rubber ones that I like so you might try emailing Jeff to see if they're available (ugly but very functional). Otherwise there's usually several sellers on eBay that have plastic ones (don't pay more than $7 each) with different companies logos (Teac, Tascam, Sony, Revox etc) on them. For a while, I was just using some that I cut out of cardboard. The boxes of Uncle Ben's rice are the right thickness (I prefer the Wild Rice Original recipe myself).