We know that unicycles are meant for just one person, and balancing on one is already hard enough, but two? That’s what the Tandem Unicycle is all about, boasting just a single wheel (hence its name) and yet having two seats for a couple to ride in. No idea on how the balance issues are going to get sorted out, so expect to experience some scrapes and cuts when you first try it out. Only those with a circus degree need apply… [via Corbin’s Treehouse]