Frugality takes many forms, especially when it comes to our kids. Frugality isn't always about finding the best price on something. Sometimes its about getting the most use out of something you already have.
With this in mind, my seven year old son has learned to reattach his own bike chain. He likes to shift gears while pedaling backwards. This blows the chain off the bike every time so we decided reattaching it needed to be his responsibilty. Interestingly enough, he doesn't do it as much since it became his problem.
Similarly, my 13 year old has been rollerblading all over the neighborhood this summer and took it upon herself to learn how to adjust the brake on her rollerblades. I didn't even know these things could be adjusted!
When kids embrace frugality other interesting things happen. My daughter had a hair straightener that stopped heating up a few months back. Before relegating it to the trash, she decided to take it apart to see if she could find a loose connection. She didn't find a loose connection but I'm proud of her for trying.