It's summertime and the weekend is almost here. Time to go tobogganing!
Not practical, you say? Well, just check out this article posted on the always-amusing Modern Mechanix blog (from a 1931 issue of Modern Mechanics magazine): "Toboggans on Pine Needles". It gives details on how you can make a fun toboggan run that slides on pine needles so that you can engage in your favorite wintertime activities in the summer.