Well, I've been something of an uncaring owner for a while, but I've decided things have gotten out of hand...

The bumper condition's actually been pretty static for a while now, but the paint.. yikes. Is there anything I can do to at least temporarily contain the flaking and damage? This is way past touchup paint by now, I suspect.
I'm a college kid, so what's the cheapest way to keep this from getting worse?