Knitting/crocheting
Knitting might seem like an activity reserved for grandmothers, but handmade scarves and hats are big sellers in the online marketplace. Wholesale yarn is relatively inexpensive, and depending on how quickly you can knit, you'll be able to build up your inventory and spend more time marketing your store. Don't know how to knit or crochet? Sites like KnittingHelp.com are readily available to teach you.