TIDE Not only smokers know it: lighters tend to be used as toys because of their shape, size and feel. Often you catch yourself or others as the lighter moves from one hand to the other, turning and bobbing. Lighters that are made of transparent plastic with a partition wall that separates the liquid gas […]


SELF-CHECK to monitor nutrition Malnutrition is a worldwide problem due to industrially processed food and due to a lack of knowledge. In order to enable people, especially children, to check the quality of their food, I developed a simple and playful self-test to check one’s own vitamin C levels. Tests for other vital vitamins and […]