Patching Jeans

I have a 20 something neighbor who frequently needs his jeans patched. DH and I trade favors with him and his parents so I patch his jeans when they need it. A few days ago he brought 3 or 4 pairs to be patched. One of them was in such disreputable state it couldn't be fixed.

I wrote his name and "patches" on the leather label in back and put it with my sewing stuff. I now have denim to patch his jeans for eons to come.