On the freeway exit ramp nearest my house, there is often a rotating roster of homeless, panhandling at the stoplight. I used to carry a couple of small bills in the car to give to them.
In order to make a donation, I had to be fairly lucky. First, there would have to be a tramp on duty. Next, I would have to be in one of the first few cars caught at the stoplight. Stopping solely to make a donation would be asking to be rear-ended.
After a few weeks of unsuccessful donation, I hit upon a new strategy of disposing of my cash, while at the same time practicing my in-car origami skills.
To play along at home, you will need at least one banknote and one quarter. Two of each works better. Newer banknotes help.
Place the coin(s) on the reverse of the note behind the president's face. Fold the shorter side of the note over and around the coins. Fold in the sides with a slight taper. Fold the free end around the coin and tuck into the flap.
The first time I tried this, I tossed it out the window as I passed and hit the unfortunate hobo in the vicinity of his nuts.