When I was home for Christmas this year, my little cousins were showing me this toy that Santa brought for them—they were these little balls called “Smashers” which you would (no surprise) smash on the ground. Each ball has a small toy inside, but once they’re broken, they’re nearly impossible to put back together. As these little kids on YouTube taught me, each piece barely fits together and you have to carefully maneuver them into place before they snap together…