Making a substantial donation to your favorite nonprofit organization is great, but not everyone is in a position to write a big check to the local food pantry, JCC, synagogue or homeless shelter. There are other ways to support the important mission of these organizations. In the 21st century, individuals who use social media to help promote the services provided by nonprofits are helping these institutions in big ways. When a layperson shares the good works of local nonprofits, it is as if that individual works for the nonprofit.
Every synagogue minyan (daily prayer group) has the one person who always seems to be there. In some congregations, this might be the gabbai (a ritual director of sorts). In other shuls it might be the rabbi. And in others it might be a lay person who is very dedicated and wants to ensure there is always a minyan (quorum of 10) so others can say the Mourner's Kaddish. Some minyans have a group of dedicated individuals who make it a point to always attend -- regardless of rain, sleet or snow.