[helgi]

You can look at this from two perspectives: your contribution at the level of effect, and at the level of cause; Top-down, bottom-up. And these are then two levels of priority/importance, primary and secondary.

Approaching it on the level of effect, you could try to do something overtly charitable, like donating your time drawing portraits of children in a children's hospital etc., but always keeping in mind that this level is only ever of secondary importance.
The level of cause is then always of primary importance, which would be the level of consciousness out of which your artwork comes. And so how exactly that manifests in form is then something that will be revealed in time.

Simply extending peace and kindness to your clients and those around you is in and of itself a significant contribution to the world. And I'm sure that if you simply put your focus on doing whatever you happen to be doing at the moment with love and quality, the particular steps you need to take on the level of effect will become clear.

edit: I'm reminded of an artist (think he's Scottish), that makes paintings and then leaves them out on the streets of his city with a note on the back that says something to the effect of "Hello, my name is such and such and this painting is for you to keep."
A wonderful way of extending kindness to strangers with art.