DIY Doll sandals. Trace the foot, cut the pieces from foam or whatever you have on hand and put more than 1 ribbon across the top of the foot and then glue another foam bottom to hold and hide the ribbon for the sandals.
30 minute doll clothes on Sewing with Nancy. Lots of sewing techniques and tips in two episodes (including serger techniques). http://video.wpt2.org/video/2152365156 (part 1) and http://video.wpt2.org/video/2160358419 (part 2 - serger tips in this video)