We happen to live about 2 blocks from a women's/children's thrift store. It's a pretty hit and miss experience to find stuff for myself or the kids, but sometimes I do see something worth grabbing. I don't usually buy clothes for the kids that require refashioning (so not worth the energy for the amount of time they'll wear it!), but sometimes I'm drawn to something for myself that needs a little fixing.
First item I grabbed was a deep purple pair of cropped pants from Eddie Bauer. Ripstop, 100% cotton. They fit just a tad large in the hips, but were quite large in the waist causing a lot of sagging. Simple fix. I added a piece of sewn in elastic across the back waist facing, much like toddler pants. These are perfect for hanging around in this summer, casual BBQing, gardening, etc.