the old man (read 'I') did not have a very good eye for the right size. Too big. So we went searching for smaller bike, second hand from Marktplaats. Sometimes you can be lucky. We found a perfect black granny bike, very close to home, for just €10. Only the cycle chain had come off. We laid it back and N. has an almost new, right size bike. A new bike calls for a new key chain. It became a small coin purse made from her own fabric. No tutorial used, but here, here and here are some nice ones for different coin purses.