Potholder for Patching Gardening Pants

My husband had a pair of gardening pants which he had worn out at the knees. He asked me if I could mend them. So I decided to visit the dollar store to see if I could find any knee patches. I couldn't find any, but wandered over to the kitchen section and found pot holders (two for $1.00). I stitched the pot holders where he had worn out the knees. He now has mended pants with padding on his knees.