So what to do with dumpster bike

I stripped down dumpster bike today. It's a cheap frame but still, the tinkerer in me says you can do something with this thing. So what to doy

A fixie? Maybe but it's pretty hilly around here and I'm pretty sure my legs aren't fixie worthy.

A single speed? I've got to admit it's appealing. I haven't owned a single speed bike since elementary school.

A bad weather commuter with an IGH? I love this idea in theory but I'm not sure about installing a $150 hub on a ten dollar frame.

Speaking of bad weather commuters why aren't there more bikes with full chain cases? Seriously, chain maintenance is right up there with tax preparation on the list of things you don't want to do.