I have a lot of pesos I need to get rid of in the next month and a half. I've started drinking really expensive wine, eating out at nice restaurants, taking taxis and going shopping for stuff to potentially sell down the line back in the U.S. Turns out Buenos Aires is a pretty nice place to live when you can afford to do things like that all the time! In my next life, I'll come back down here as a wealthy retiree or trust fund brat. I suggest you go to a cueva or start living the high life unless you're willing to try to Ebay/Craigslist a bunch of crap later. Yes, it's stab in the gut to think of all that hard-earned money you're basically throwing down the toilet, but if you're not willing to go to a cueva or be a leather mule, you might as well have some fun.
Another option would be to donate what you have left to a worthy charitable organization. Pesos may be worthless to you, but they can be put to good use in Argentina by people who need them. This is probably what we'll do with what we have left at the end, and we're currently looking into charities, so if anyone has recommendations, please leave them here.