I've posted before about our CraigsList luck. We sold an old dog kennel and weight set that DH couldn't seem to (1) use, lol and (2) get to fit in our basement. We also sold an old table and mis-matched buffet for $25. Total on those 3 listings was over $200.
We have reasonable luck with garage sales. Nothing huge but about $200. We run for one day and sell what we think will sell. The rest, I donate and get the tax deduction. We usually have a couple of "bigger" things to sell to help draw in people (microwave, old gas grill, patio furniture, bikes, furniture, etc). Then the rest we make up with clothes, books, toys, etc.