sadly with the economy what it is the only things really selling- and then not well are the really inexpensive items- things under $10---$5 is better-- so it is quite limited what you can sell and make any money at.
coasters (mug=rugs) pot holders, aprons, placemats, napkins, table runners, ornaments and stockings, glasses cases, wallets,are a few items i've seen seem to sell but not alot. it depends on the show itself- the location-
and how many people are trying to sell the same stuff-
baskets, fabric bowls, locker hooked hot pads...if you can come up with something there are not 15 other people trying to sell you have a better chance of at least covering your booth space fee...but i've seen that not happen alot in the past couple years- and it doesn't seem to be better so far this year. i'm going to another one in a couple weeks (not to sell- to look and spend) so i will post how that one seemed to do after the fact... craft fairs used to be much better for making some holiday extra money- but the last few years- at least in northern michigan it seems they are more of an expense than a money maker