I'm not sure than anything makes you feel like a better person than helping someone else. i mentioned here that i started cleaning our toy room (what a task that was). i also mentioned here my need to downsize. this last week, i finally put both together and accomplished something. i got rid of 6 bags of toys from our playroom (and 3 bags of trash, but that's not what is important).
so, what is the point of my story? if you're looking for a place to donate items, maybe you should look up your local women's shelter. most of these places aren't really obviously advertised, but i'm sure you can find a number listed or call your local police station, they can give you info on who to contact.
many of these women leave their home with nothing but the clothes on their backs. many of them leave their jobs as well. depending on the situation, a lot of these women basically are in hiding. donations can be a wide variety of items from toys, women's clothing and children's clothing, personal items, furniture. if you can imagine what you would need if you were starting your life over from scratch, you can come up with something someone needs.
the upside for us: i feel as though i accomplished something good, i took care of a problem that has been bothering me for a while, i don't mind walking through that room anymore and our children are actually playing with the toys that are left.