This unusual wireless computer mouse was created by Japanese design studio Nendo for Elecom. Called Kandenchi, which in Japanese means dry cell battery, the piece lives up to its name. The mouse is the same shape and size as a D battery. Even though it might look ergonomically awkward, it follows human clicking habits precisely. The left-click button is positioned directly under the index finger, if you grip the mouse from the side, the scrolling wheel is positioned under the middle finger, and what looks like the positive terminal is the right-click button.

Kandenchi’s unique shape and small size make it ideal for fitting in tight spaces. It can also be a great solution for a trackpad-hating commuter. Operational on virtually every surface, the mouse can be used on a train or in any other public place with limited working area.