Interactive paper toys fitted onto a robot that is controlled by an app to help children learn programming are displayed during the Mobile World Congress wireless show in Barcelona, Spain, Tuesday, Feb. 23, 2016.

Read more: Food Printers & Eye Writing: Tech Show’s Quirkiest Gadgets

Aimed at children as young as eight years old, the Kamibot robot can be covered with paper-made “skins” to turn it into a variety of characters, including Dracula, Frankenstein, and several popular figures in Korea.

A man touches the screen of a 3-D food printer during the Mobile World Congress wireless show in Barcelona, Spain, Tuesday, Feb. 23, 2016. Natural Machines co-founder Lynette Kucsma insisted her company hadn’t replicated Star Trek’s “food synthesizer” that made munchies appear at Captain Kirk’s mere command. But they sure have come pretty close with their 3-D food printer.

A man uses Chromville app at a tablet during the Mobile World Congress wireless show in Barcelona, Spain, Tuesday, Feb. 23, 2016. Via the Chromville app, kids can interact with the image to study basic science. For example, the solar system lets them explore the planets, a laboratory teaches the states of water and the human body details the skeleton.

A man uses his eyes to write in a smart phone during the Mobile World Congress wireless show in Barcelona, Spain, Tuesday, Feb. 23, 2016. Irisbond has now made it way easier to write with our sight. Instead of needing a special camera, typing on a computer can now be done with the Irisbond eye-tracking app. Co-founder and CEO Eduardo Jauregui said the app, which can work with standard smartphone cameras, is designed for disabled users. But, he said it could also be helpful for professionals, like surgeons, who may have limited use of their hands.

A man uses his eyes to write in a computer during the Mobile World Congress wireless show in Barcelona, Spain, Tuesday, Feb. 23, 2016. Irisbond has now made it way easier to write with our sight. Instead of needing a special camera, typing on a computer can now be done with the Irisbond eye-tracking app. Co-founder and CEO Eduardo Jauregui said the app, which can work with standard smartphone cameras, is designed for disabled users. But, he said it could also be helpful for professionals, like surgeons, who may have limited use of their hands.