Have you ever spent hours unsewing? My record is about 4 hours after mismatching a queen size quilt design. I could have used one of these! In the 4 hours I could have had it unstitched and resewn properly.
Some people have been using a personal care product called a mustache trimmer (also used on other facial parts) with some success. At retreat in November a quilter had one of these ones and highly recommended it.
Galaxy Notions has released this as a notion for quilters. The electric seam ripper comes in a more quilterly purple.