I have no idea how many years I have been shopping at the Mercer Island Thrift Shop, but it's at least been since the mid-1990s since I remember picking up a few toys for Artyom there. Donating items is an important part of thrift shopping, and for a long time I carefully recorded donations. However, over the years I realized that my taxes never really got to the point where my donations affected them, so I now wave off the form. The forms have also gotten simpler and smaller; here's what one looked like in 2006. Note also the shop hours; at this time we were stocking on Mondays and Thursdays, and completely closed on Sundays; it's much harder for volunteers to stock now that there are no special stocking days and I think it may even have Sunday hours now too.
I'm writing this post on March 1, 2013 but I'll try scheduling it for the date on the form: August 10, 2006 just to see what happens!