Last year someone came by the shop where I was building a 40-foot (12m) dome. He noticed our smaller 10-foot (3m) geodesic dome we left on the side of the road. He asked how much it cost, explaining he wanted to give his son an igloo for the winter season.
We were a little surprised he saw this as an igloo for kids, but we loved the idea. We began reminiscing about building snow forts and bunkers as children. We agreed that the ones dug into a snow bank were the coolest and most secure to hide cookie and juice boxes from our parents and annoying girls.
Making a Gigloo is simple: build a 2v or 3v geodesic dome out of conduit, cover it with a first layer of snow fence (that orange stuff) and then throw a tarp over it. Ideally a 3v is better because the empty areas to cover are smaller.
To make it safe for kids, attach the fence material with as many zip ties as you can find. This ensures the fencing will not move and can support large amounts of snow on top of it. The addition of the tarp over the plastic fencing ensures no snow or water will enter the dome. Make sure your tarp is also fastened tightly over and around the Gigloo.
The other safety feature is to add a ventilation cap. It also doubles as a device to hear when supper is ready.
The best part for the parent (s) who will build a Gigloo, aside from a low cost and safety for your kids playing in the snow, is that it does not need to look perfect: it will be covered in snow fast enough.
At least now you know where those missing treats can be found 
