JCPenney offers the Isotoner Women's Microsuede Faux-Fur Boot Slippers in Buckskin, Black, or Chocolate for $7.99. Choose in-store pickup at $2.95 to avoid the $8 shipping fee. That's $14 under a similar pair elsewhere. They come in sizes 6-7 through 9-10.
Almost anyone can do this increasingly lucrative gig and work as few -- or as many hours -- as desired.