Yesterday was the first day of the fourth Make: Tokyo meeting held at the Ookuyama campus of Tokyo Institute of Technology. Organized by Make Magazine, it showcases the work of inventors who are not affiliated to large companies. Instead, students, start-ups and hobbyists were there to display their work and share ideas. As you might imagine, the work ranged from the ingenious to the just plain silly, with all shades between. Here are some things that caught my eye.

The prize for most outstanding use of an everyday item had to go to Jinno for his Rainbow Engine, a beautiful kaleidoscopic machine, whose main part consisted of a disk made from Scotch Tape that, when filtered through another disk, created the beautiful display of colors you can see in the video below.