James (husband) is heavily into cycling. But he takes pleasure in buying everything he needs for cycling. Deciding on a gift for him is hard going, so I made him a clock using a bike cog. I asked in a bike shop if they had any bike cogs they didn't want. I got the one below. I bolted it onto a cardboard cake plate that I had glued a map of our area onto. The little clock mechanism is each side of a central hole.