I happened across a video for these on the Jillily site & decided to pick up a box at my local LQS. OMG! They are amazing! I am able to do my needle turn applique 4x faster! Not only are they great for protecting my sore little fingers without the bulk of a traditional thimble, they also have this rubbery like surface that makes them great for gripping my needle to pull it the rest of the way through the fabric. I paid $9 for 18 of them and they are reusable (not sure how many times I can reuse them, but I've taken them off and put them back on no problem.
Just wanted to pass along this fun find to any other hand appliquers out there (especially if you do turned edge or needle turn).
https://www.youtube.com/watch?v=iAfaOf7rgTA