I have given away a lot of stuff, but yesterday I managed to sell a special item, hobby related, expensive to buy new, difficult to find second hand, and not losing much value when being used. I knew it would keep it's value, but pretty difficult to find a buyer.. So happy I found, not one, but two all of a sudden. This meant I did not have to lower the price, but received the $200 I wanted. Also, it is huge, so we could not bring it easily when we move, so double whammy :-)
I asked the buyer if he wanted a couple of items for free, one related to the hobby, the other two outdoor toys in good condition. My kids have are way too old for these and he had two small very nicely behaving kids in the car, so I asked him without his kids noticing, if he wanted them. He was delighted and so were his kids when he told them. And so was I :-)
(if I ask a parent if they want to take some toys for free, I always make sure their kids do not hear, so the parent can say no w/o the kids noticing)