spend hours/days finding out their personal addresses. tie the money, and a note to a brick. also steal a bicycle.

park your car a few blocks away. put on a balaclava, and remove the stolen bike from the bike rack. bike to the house, launch the brick through their window.

done.. you're privacy is still mostly secured, and they get money for existing.

everyone's happy.

You could purchase some prepaid debit gift cards at a store with cash and use those, if you want something traditional.

I think that depends on them because they would have to set up some way for people to pay them

I use an app called "Privacy" to create virtual cards for most things