MNTNT is a brand from Paris whose aim is to make sure we all keep our minds a little bit sharper. How? By making a clock which gives us a sum to do in order to work out what time it is. The Albert Clock can even be adapted to suit your maths skill, so if the original problems are too easy for you, you can go up a level (there are four in total). Sure, it’s not ideal if you desperately need to know the time, but it would certainly help to keep your brain going during the day, and could be a fun way to get kids to do maths, as well. They’ve even created an Albert App for iPhones. Find out more on MNTNT’s Kickstarter campaign page.