Props to you young entrepreneurs, hackers, and vegan hippies. You may want to consider charging rent-- it will do several things for you:
- focus your priorities on the important projects
- cover the costs of the space
- raise the commitment level of those willing to pay
The rent doesn't have to be the same for everyone. You can work out whatever Widow's Mite formula you want. Begging for funds from external sources isn't probably the best thing for your brand, however, IMHO.