Some of these are from swaps, some are from Happy Mail, which is a craftalong where there’s no expectation of return for snail mail sent, others are from snail mail from people I actually know, and the list goes on. I sort of “smash it all together.” Some of it is from things I used myself, such as the “lift the flap” items. Those are usually from postage stamp backing, which is not recyclable, so I make something with it 
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