Community service - I volunteeer at my synagogue and my local public library. I also do mailings at my daughter's high school from time to time. I used to be quite active at school when my kids were younger.
Others - my husband and I often reach out to friends and neighbors; we prepare meals for new parents or those who are sick, bereaved or in crisis.
On the street - not often. I used to donate gifts to homeless children at Christmastime when I worked near a bank that collected and distributed them.
Organized charities - I've given to Doctors Without Borders. Once I gave to the Red Cross after Hurricane Andrew and I heard from them every quarter for years.