The flat rate boxes are great ideas. I see flat rate boxes going for great prices as "lots" on ebay all the time ,and they sell well on here as well. Sounds like you have enough that you can donate as well as sell. No need to not try to get some money back . I too donate but it is mostly in scraps and most of the time people are happy to get it. I keep track of the ones that seem to apreciate it and often send to them more than once as I am able to afford postage. that being said I would be happy to buy some tone on tone blender types