Ok, so there have been some strange inventions release in Japan over the years, but these five are extremely useful to say the least. They range from a self-stirring pot to a machine that instantly obliterates your data. Continue reading to see them all.

5. Data Crusher

Whether it be sensitive information or just embarrassing photos that you’d like to get rid of, this machine will do it for you, and in an instant. Data Killer’s lineup includes models that can destroy the data on up to 14 separate hard drives simultaneously. Simply put, it’s a device for wiping out magnetic data. Its strong magnetic field obliterates the data on a hard disk, so you can think of it as a “data crusher.” It erases data instantly.

4. Transparent Double-Sided Display

While it may be more of a novelty…for now, this nifty transparent, double-sided display by Japan-based NTT DoCoMo and Fujitsu accepts simultaneous front and back touch inputs, allowing for more creativity from mobile developers. Hopefully, the production version features a larger screen size than the 2.4-inch display found on the prototype – plus increase the brightness.

3. Office Paper to Toilet Paper Machine

Meet “White Goat,” an innovative machine by Oriental Co., Ltd that transforms office paper into usable toilet paper. Just add water to the paper and out comes a roll of toilet paper in 3-minutes. Best of all, there’s already a built-in shredder to starts things off. The shredded paper then moves on to a pulper where it gets dissolved in water. The pulp becomes wet paper and is eventually dried and rolled up into ready-to-use toilet paper.

2. True 3D Display

Burton Inc. has developed one of the – if not the – first true 3D displays that uses a laser to create luminous points of light in 3D space. In a nutshell, this display works by using the oxygen and nitrogen in the air to create a “plasma excitation.” This early prototype can project 50,000 dots per second and can work at up to 15 frames per second. The production model will work at a smooth 30 frames per second.

1. Self-Stirring Pot

Unlike normal pots, the inertia of the moving water in this one results in more efficient heating of the contents so the water’s boiling point is reached in a shorter time, thus saving energy. Plus, the spinning water tends to rise higher along the sides of the pot, channeling pasta or other foods into the center of the pot and making it much easier to skim foam off the surface.