In quilters' lingo, "postage stamp" is a term often used to describe quilts made from many small squares.
The box of 1.5" squares stayed out after I finished the Crabapples flimsy (see previous post). These are not exactly leaders-and-enders because this was the only project I was working on. I just cranked them out--sew a bunch of pairs (30 or so), press open. Sew the pairs together, press open. Sew the fours together, press open. Sew the eights together, press open. Repeat.