One of the ladies in my quilting club had a seam ripper with a wooden handle. I was admiring it and she told me her husband makes them. So I asked if she could have one made with a larger handle as I have large hands and arthritic fingers. He made it to order and I love it.
If you know anyone who is a woodworker, and has a lathe, he/she could make one for you easily enough if you show the photo.