I hear you. I have a method for that. When giving away my son's stuff, I offer just one piece (clothes, toys, whatever it may be), but have a whole bag ready. When a person shows up and they seem nice, I offer them a whole bunch of stuff. Saves me the trouble and weeds out weird folks. There was this single mother whose kid is 2 years younger than mine, and after one time I gave her some stuff I'd just let her know when we had a next batch of stuff ready for them. After a few years she said she was doing better and no longer needed our stuff.