Freecycle.org is a network of local groups that is organized to give away things that you are not using to people nearby who want them.
It bypasses the charity groups, rummage/garage/yard sales, and all that stuff that takes physical effort on the part of the giver-awayer. After joining the group, I posted my yogurt maker and it was picked up this morning from my front porch. This afternoon, I am putting out an adorable teapot/cup combo, which just does not fit into my tea drinking habit. Someone will be delighted to have it and I don't have to do anything but put it out for her to pick up. Ingenious!