 Let's start with the hammock. According to the University of Geneva, the rocking motion of a hammock is ideal for sleeping. In an experiment, the researchers found that those who had slept in a hammock the night before a memory test performed better than those who had slept in a bed. Another memory trick, draw what you want to remember. Even if it's only stick figures, the University of Waterloo gave a group of adults, young and old, sets of words to learn and had them try different memory-enhancing methods. What they found was that drawing improved memory more than any other technique.