Have 2 girls and believe it or not Minecraft is a bit of an obsession in our place especially when they connect to each other.
Hard to build tree forts as they would stick out in Brooklyn and probably aren't legal in any case.
Nerf guns are for weenies!! We used BB guns when we were kids but we also had several hundred acres to play on!! When we ran out of BBs there were always bottle rockets around. :)