They have morning and afternoon volunteering sessions. The morning slot is from 9am to noon. And the afternoon slot is from 12.30-3pm. Details inside...
Things that can be donated: clean clothing, shoes, bedding, toys, books, and small household appliances.
Things that cannot be donated: Porn, coloring books already colored in, and Russian postcards.
So, as you can see, they need some help filtering out the stuff that can't be sent off. Take a friend or your family -- it's a great opportunity to get involved with the community and meet altruistic people. To join, just send them an email at firstname.lastname@example.org. Or if you're short on time, just show up on the day of.
Then a couple weeks later, Community Center Shanghai has their annual fundraising gala at the Grand Hyatt in the Jinmao Tower. Tickets aren't cheap -- 1,000rmb -- but proceeds go toward the many great services the nonprofit does, including providing educational events, tours, and counseling for the international community.
You can also learn more about Community Center Shanghai in this Communities article.