There is Halloween, Thanksgiving and Christmas to start looking for items for these holidays to sell for. Since I shop in thrift stores alot I am starting to see half price Christmas items.
I recently sold CAMPBELL'S SOUP KIDS A Hearty Christmas Ornament 1996. This one I picked up at a thrift store Christmas in July sale was regularly priced at $1.96. Since it being a half price sale I paid $0.98c for. I listed it new in box, since it was in the original box and this Campbell's soup ornament seem like it was never used.

I listed it on eBay on Auction for 7 days. Started off at $7.99. It sold for $15.70. Another good profit on a pick up for under $1.00