And now for another edition of “Why didn’t I think of that?” starring Jung Soo Park’s magnetic hammer named Neo. One of the most frustrating things when you head up a ladder is having nowhere to put your nails. Jung Soo Park has tried to solve that problem by creating a hammer with a magnetic bottom so that the nails attach to it, freeing up your extra hand to stay safe on the ladder and keep dirty nails out of your mouth. Smart! Watch the video here.