Winter has been very cruel to the leggings in our house. There is nary a pair without a holey knee or two. But rather than throw them away, I spent a few hours making felt patches to cover the holes and voila - even cooler tights!
Easy and so effective! You could also cut simple shapes like circles, stars triangles and squares. Raid the cookie cutter drawer to make some patterns. A gem-shape would look great, especially with some contrasting stitching to mark the facets! Let me know if you make felt knee patches for your kids' leggings or pants - I'd love to see pics.
Note - I wash with cold water and I don't use the dryer; both of which may affect the felt and cause shrinkage.
[My little one wears her leggings with a tutu from Tutu du Monde.]
Image: Steph Bond-Hutkin | Bondville