For a hairclip-sized bow, grab a piece of wide velvet ribbon and follow our other hair bow tutorial to make folds in the ribbon. Fold over the raw end and cinch the center of the bow.
Stitch through all layers of ribbon and knot/cut your thread.
Use a smaller piece of ribbon or just another piece of the same ribbon, folded over itself to be thinner, to wrap the center of the bow.
At the back, place the small 1xAAA inverter and wrap the ribbon tightly to hold the inverter in place (but not so tightly that you can't slide it out to change the battery). Fold over the raw edge and stitch the center band ribbon in place with a whip stitch.
Turn right side out and lay your new loop flat on the table/ironing board with the new seam positioned in the center.
Arrange the fabric around the foam and use a needle and thread to stitch through all layers of fabric and foam. Tie off and cut the thread.
Use your hands and/or a paintbrush and allow to dry overnight.