I thought it might be interesting to hear about strange cycling contraptions that people have seen.
Last weekend I saw a recumbant tricycle on the Forth Road bridge, recumbants are rare enough but that is the first three wheeler I have seen in real life.
In Leith Street a few days ago I was coming up behind a man towing a kid which I initially thought was one of those back wheel things which you bolt on your bike and the kid sits on and pedals (don't know what they are called). When I passed it I realised that the kid was actually on his own bike and the front wheel was lashed to a device which was then lashed on to Dads bike. Pretty neat I thought and flexible too.