flashinvaders app

traveling to paris with kids? download the flashinvaders app and make every walk a scavenger hunt. you take photos of the little invaders you find (little mosaics on external walls throughout the city!) and get points for finding them. this was beloved for my 3 and 5 year old, but would hit with teenagers (or just adults) as well. while paris has the most invaders of anywhere, you can also find these mosaics in lots of other cities.