Jig handles are not unlike any other hand tool; the go-to shop companion must be comfortable and intuitive. Having experimented with dozens of different handle shapes and sizes, I found the perfect solution hanging on my wall: my favorite handsaw. I traced the handle onto a 1¼"-thick hardwood blank. (Use whatever scrap you have on hand, but I suggest starting with a blank that’s a few inches longer and wider than you might need, so that you can adapt the handle for multiple jigs.)
After cutting the handle to rough shape, invest a little time shaping and sanding it, and you may find that the jig graduates from “one-time” use to “new best friend.”