As a 10-year old child, I was fascinated by time machines and spent a lot of time drawing them. In my mind, these were large warehouse size machines capable of transporting a human being through time. The more elaborate, the better. Blank section of paper to fill? Maybe throw in an extra knife switch or Van Der Graaf generator. As an adult, I think my fascination had more to do with complicated electronic equipment than time travel (though time travel is still cool).