I think we should start paying back our debt with goods, services, and labor.
It's possible, but it requires the leadership at the top to change.
Here's a great example; Japan is our second largest creditor. If we gave them all the money we borrowed from them right now, they would use it to rebuild their country. Why not start up American industry again for that very purpose, and rebuild it for them? In doing so, we'd be helping ourselves actually get back on our feet and become a functioning country again. Rather than just producing endless plastic crap, we would be able to produce real goods for real needs.
The first question people ask me is; "How would you pay for it?". Trust me when I say we can pay for it. But trust me too when I say you probably can't pay for it in dollars - you'll have to find other ways of letting people be happy, besides shoving cash in their face and telling them to buy stuff they don't really need or want.