You are a loiterer, hanging around on the subway platform. You know perfectly well that this is against the rules, but the rules are pretty stupid. And you have good reason to be here, so they can stuff the rules.
You are a bag lady. You panhandle for change around Harvard Square. Normally you don't do the T platforms, because it's just too expensive, but some joker gave you a T token today, so what the hell. Look for people who look like they might have money, and wheedle at them. You can't panhandle too blatantly or you'll get arrested, so be subtle if needed.
A T Token (T Token) -- A dull brass-colored coin with a picture of a train on it. T tokens cost one dollar, and allow you entry into the subway. Once in the subway, you can go almost anywhere in Boston.
A large plastic bag (Bag Of Cans) -- A black plastic trash bag. From the way it's rattling, it appears to be full of tin cans. It smells a bit.