There's this group that provides Christmas meals for people who otherwise wouldn't have one. Homeless people et al.
It's pretty cheap and easy to donate - send an SMS to a number and get billed a small sum on the next phone bill, and the cost is enough to cover said meal for two people.
My work phone bill is sent and automatically paid my employer, so I make sure they donate to the same cause. I've been doing it for years and to this day no employer has gone on the record not in support of the cause.