If it fits, build up as a friction shift 1x7/8/whatever with fenders and knobbies for commuting/bad weather/fun. My 1x7 'cross-ish bike makes a great commuter in my hilly area.




[Insert obligatory "1x7 is impossible your chainliiiiiine" hating here. I ride it every day, and it works even with the nastiest rustiest cassette and chain known to man]