Things that we take for granted can be challenging in zero gravity. Take cutting your finger nails, for instance. It’s something that few people think about as a challenge. In space, they can be floating projectiles that end up in astronauts’ eyes, inhaled, or otherwise embedded where they do not belong. The answer – suction. If you can stand watching someone else trim their nails, here’s a video from the quirky Canadian astronaut Chris Hadfield as he demonstrates the complications of this mundane task in space. …

We all know people who are just too happy. Annoyingly, overly happy. Well, here’s an invention for those people by those people. A designer actually looked at the common household nail and saw the opportunity for optimistic improvement. The git. It’s hard to believe this simple innovation has never been done before. The designer of the Happy Face Nail Cap, Jung-Woo Lee, felt that having a plain nail in the wall was a missed opportunity. You simply slip the nail cap over a nail and viola, happy nails. And what if you’re a miserable, pessimistic person, the kind of person who is grinding their teeth…