Try this: There's this person standing in a field, and with them is a balloon, a vacuum cleaner, and a magical creature of unknown origin. They need to get across to the woods at the end of the field, and do so safely. They can only go together: they get very, extremely lonely if they do not travel together, and they will not be safe because of this loneliness. If left together, the baloon would suck up the vacuum cleaner, and if the vacuum is left alone with the magical create of unknown origin, they will fight, probably, and explode. How do we get everyone to the woods safely, you think?