I used to limit myself to nothing smaller than 2½" square, but with all the adorable string quilts and postage stamp quilts I've seen lately, I've had to rethink this rule. Now I save everything that might reasonably be used within this lifetime (since it's the only one I'll have). It's a personal thing... some people don't want to bother with little miscellaneous pieces; some people love the challenge of finding ways to use them. There is no right or wrong on this - it's just a choice. Which one are you?