My experience will probably disappoint you, but you cannot give the money to someone who is not prepared to take it. And those who are willing to take it, are maybe too prepared to take it.

Even giving it to a orphanage or a charity may be a bad thing, because sometimes you support some bureaucracy and the awful practices in the orphanage and not the kids themselves. Giving it to a bum in central Sofia it's quite certain that it gets directly into the hands of the mafia, who have divided the centre into zones of control and are "managing" the beggars and the bums.

I like to buy books to people, who would otherwise never have bought this particular book. It doesn't help too much, but sometimes it helps.

I am quite curious to learn how did you do with your experiment.