I've been bidding on a few eLance projects - small ones that require maybe an hour's worth of setup - I figure even if I don't win the job, it gives me ideas for sample projects that I can use towards a portfolio. I can't imagine having a catalog of various databases (with front ends) can't hurt.

Regarding the charities - luckily, I live in a somewhat economically depressed area, and my marketing experience has put me in contact with relatively high profile community officials - i.e., chambers of commerce, etc. Based on your suggestion, I've put feelers out, letting them know that I'm ready and willing to assist - I'm hoping this will yield some results.