Is there a toy library near you? i go to our local one and borrow toys most weeks, ds gets bored so easily, its a good chance to try out differant toys with out the cost of buying them. We also go to the book library when its hot, he can walk around in the a/c, we read and look at differant books, often there will be other kids there and he has a play with them. And some even have free story time sessions.
sorry thats all i can think of at the moment..