Salvador Dali, the great surrealist, used to grab ideas for paintings from the very fertile semi-sleep state we call the hypnagogic state. He’d lie on a sofa and hold a spoon in one hand, balancing it on the edge of a glass placed on the floor. Just as he’d drift off to sleep, he’d release the spoon, and the sound of the spoon hitting the glass would awaken him. Immediately, he’d sketch the bizarre hypnagogic images he was seeing.

We all have bizarre perceptual experiences in those moments before we fall fully asleep. Dali simply developed a way to seize some of them. Capturing skills can be taught to people of all ages and in all occupations. Teachers, parents, and managers can boost the creative output of a group simply by providing some simple training and the right materials.