Sterile medical tools thanks to UV light? Glasses for one dollar? A tractor for agricultural purposes with only 15 horsepower? There are numerous examples of frugal innovation, and more and more are on the way. The ‘Frugal Innovation Map’ by Lukas Neumann, one of the founders of the Frugal Innovation Network and speaker at the GDI Trend Day, has a whole list of innovations and start-ups ready.