I have given away a baby den thingy, a jumperoo, bumboo seat, bags and bags of girl clothes to a friend, and expected nothing but a thank you!
Have also just given away the high chair to other friends....
it helps me get it out of the house, as I am too lazy to ebay stuff tbh.
On the other hand, I have received lots of stuff from friends, my sister, and a neighbour of my sil, who has a boy 6 months older than mine. I have offered money each time, but it has been refused! We even received a cabin bed in this way, which we have yet to assemble as we have not got round to getting a mattress.Actually, all I was asked for by the neighbour of sil, was a picture of my ds in a certain pair of pyjamas that had been her ds favourite, and her ds wanted a picture to assure himself they would be worn and loved!
They probably think the same as me, it is an easy way of getting stuff you no longer use out of your house.
It would never occur to me to ask for stuff back, I have no intention of having more children, but if I did, if they offered my stuff back I would gladly take it, but otherwise just buy new stuff again!