My nieces enjoy baking and going shopping. I often feel that gift cards are a bit of cop out...but sometimes they are the best gifts.
A gift card needs a holder though. There are many great tutorials out there for gift card holders. I chose to follow Valerie's tutorial, but I made it a touch smaller and used a 1/4" seam allowance. These are fast and easy and don't require much fabric. I considered making a scrappy back, but then abandoned that idea when it was taking longer than I wanted to spend. I intended to use interfacing, but forgot that step. They seem to hold their shape pretty well without it.
The mitt idea I had long ago and actually had the fabric purchased and cut out, but never finished. I sewed the mitt parts on, then added the thermal batting and with right sides together stitched the front to the back. I left an opening for turning on one end curve. After turning, I sewed the curve together with my machine, then flipped that raw seam inside the mitt. After top stitching, the seam is totally hidden. Now they are in their new home.