Ohio City Bike Co-op 1823 Columbus Rd., 216-830-CO-OP.
For those who like to live DIY, the Ohio City Bike Co-op offers used bike frames, new and used parts, and the tools you need to put them all together. And if you've never greased a chain before, the co-op offers inexpensive classes on bike maintenance. Memberships go for $50 or 10 hours of volunteer work, so you can help fix bikes for neighborhood kids and enjoy some of the area's most intimate views of the river. (The co-op moved from Ohio City to a great warehouse in the Flats earlier this year.)