Prefer using just one wheel but don’t have a unicycle? That’s OK! Just lean back on your bicycle and pedal away.
The kid I saw doing this gets bonus points because he was going uphill along a curvy, not-so-well-paved path, carrying a handful of mail and letters. I can’t even imagine how he was steering, but he sure made it all look easy-peasy. In fact he was going too fast for me to grab my phone and take a photo in time. Otherwise I could show you just how amazing it was.