One of the kids was given a Valentine's-themed puzzle from one of their teachers at church. Although it made for a few moments of fun, it was not a puzzle that was going to hold up and last for too much longer.
So instead of just tossing it in the "circular file", I took just a few moments to repurpose it into a quick math review game for Sweetie Pea. She is, currently, knee-deep in multiplication and division, so I chose a handful of multiplication facts and wrote one on the back of each piece.
I, then, wrote the answer on the lower-right side of the front of the corresponding piece. The next day during her math review time, I set out all the pieces face-down. She chose a piece, said the answer out loud to herself, and then turned the piece over to check her accuracy.
If she answered correctly, she got to put that piece in its proper place. If not, she had to turn it back over to try that fact again in an upcoming turn.
This review worked so well, that I will keep it in mind the next time my children are given a Dollar Store puzzle from the dentist or Sunday School teacher.