[](http://canadiandesignresource.ca/wp-content/uploads/2009/03/skate_sailing.jpg) Here is a lost sport, the Skate Sail. Popular during the second world war, this was a common site on the frozen lakes and rivers of our country. You would construct a simple wooden frame (similar to a canvas stretcher), tack on a silk, or paper sail (I have seen examples that used newspapers) and use the supporting cross member as a handle. Once you figured out the direction of the wind you could rocket along the ice, getting pulled around the pond at high speed. To make it home, you would zigzag like a sailboat in the direction you came from. A great example of how we used to entertain ourselves in the winter months…no batteries required.