I found an abandoned hybrid in a dumpster about a week ago. Broke my heart that someone would throw it away when most of the bike was still in fair shape. The wheels in particular were perfectly true (though had no tires or tubes).

The cassette and rims are caked with grease and grit. I've been blasting them with orange citrus degreaser, but am having limited success. Any suggestions?

I'm also wondering if people have clever ways of making old cranks and derailleurs look new.