Our family loves winter. Snow is awesomely-wonderfully-fun and versatile. You can use it for snowball fights, skiing, snowshoeing, sledding, and snow angels. But most importantly, you can use it to build. From the time our son was barely able to walk, my husband Dave was out there building forts (Who’s the bigger kid, eh?) Afraid of collapsing tunnels, a real danger that takes the lives of a few children each winter, my husband diligently builds a wood structure upon …