Thank you to those of you who suggested the three-stitch zig zag. I think I'm finally starting to get the hang of this fold over elastic. I still lose control every now and then, as you can see.
And I made my first repair with the sewing machine. The velcro strap on Measle's terribly expensive Fivefingers shoes, which her Nana bought for her, broke a couple of months ago and have been in the "need to be fixed" pile. We happened to have just the right shade of purple thread, so you can't even tell! (Believe me when I tell you it was not easy manipulating the shoe and strap onto the sewing machine, but I was determined!)
Now I'm off to exercise and read. This may be the perfect day.