In general, I agree with the whole idea that one needs to give (or give back, depending upon your point of view and situation) to one's community. Everyone brings different things to the table, but there's someone who needs something you can offer.
I appreciate the fantastic things which have been brought forward already in this thread. Certainly community involvement is an evolving thing and sometimes it takes a while to find one's niche.
Being as we are both a coffeehouse and framiing shop, helping with Habitat for Humanity has been a good fit for us. Coffee for group workdays and one or two nicely framed pictures when the house is finished.
People have different talents. I had been a youth coach in sports for years and found that I had a certain ability which I improved with a lot of work and study. The last nine years (before we moved here), I was a 'rare' volunteer high school varsity football coach. We had a great run of four straight appearances in the state championship game and I got lots of memories and get to watch some of my former players on tv nowadays doing well.
You'll note a common thread from the above; although there was money spent on those endeavors, they are all about materials we have with which we add value or personal time. I don't believe that's a requisite or anything; it just fits what I had to give.
Having said that, one of the more exciting things I've run into recently is a mission group in Guatemala which has built churches, medical facilities and a school in a rural coffee-growing region of Guatemala. They bought a block-making machine and for $1500 can build a family a cement block house with a good roof and cement floor, really increasing their living conditions. For $500 you can get them started with a micro coffee farm. If their onsite technical advice and processing coop are good enough, their coffees in two years can potentially reach the specialty coffee levels we need for the shop. It'd be nice to get coffee from farmers we helped get started.
What we're discussing with our roaster, who has several customers like us, is to try to do a group project such as building a home and starting a farm for a family per year. You've seen the big change jars at McDonald's for Ronald McDonald house; we'd have these scattered in the coffee houses around.
What the heck... we could send them a framed picture too, couldn't we, as a good housewarmer from their stateside friends?