My pal and I fished an old delivery bike frame out of the river and sawed off the basket bit. The RH crank had rubbed a hole clean through the chainstay so I took it to the village blacksmith, who brazed... yes, built up about a square inch of braze and filled the hole. We fitted a rear wheel with a Sturmey Archer hub and a front wheel off my brother's small bike, rod brakes actuated by cable, apehanger bars and a home-made chopper seat. Then we fitted a big chrome roadster light on the front running off a dynamo. Kewl, it was. Sadly when we moved up to Newcastle it got stolen from the cellar of our house while we were having Sunday dinner in the room above, along with my regular roadster and my sister's roadster. They were recovered on the Town Moor with the brakes cut but I never saw the chopper again.
As a footnote, when we moved from Oxfordshire up to Newcastle in the early seventies my Mum asked for a glass of lager in a pub and the barman replied "Sorry Pet, only bitta, we don't get many ladies in here!" We lived about three miles from school up the A1 and on the first day at our new school it was only natural for me and my sister to cycle. I can remember the shock of the girls in her class that she had turned up on a bicycle and of course she never cycled to school again.