Winter (where there is snow) brings out the best and worst in people. It's a fact that the white stuff we call snow causes extreme mood swings for the better and worse. Some people get crazy angry, some get crazy happy. It's just how it goes. And if one experiences the crazy happy side of winter, it'll also create a snowball effect (pun intended) on a person's mental state where they'll revert back to younger times allowing their creativity to be unleashed. And if you need proof of Winter's effect on a person, just look at the picture above. Look at that Master Chief snowman
and try to tell us that the person who made it didn't experience a "snow-high" which resulted in enhanced creativity (and boredom?). That pile of snow didn't even see it coming.