While I'll start my eBay sales with books because that's what I'm most familiar with as far as selling on online auctions, I'll also be adding other items that you may find useful or interesting.
From time to time, I go up to visit my Mom and Sis. Where they live are some great places to find unusual items that I simply can't find around here, and that I don't generally see other places either. These items range from kitchen utensils to books to jewelry items like pretty gold bangles and necklaces. I even find some garden decor and other decor items that are very reasonably priced, so I can pass the savings along to my eBay customers.
I've always had fun selling on eBay and I've met some very nice people - some that I'm still in contact with on a friendly basis! That's always satisfying, knowing you've made friends with people who have done business with you.