About eight years ago (maybe? no one can exactly remember), Bill received an igloo making kit for Christmas. On a very snowy day, he and his friend got halfway through construction before naptime beckoned, and then our hot Colorado sun kind of totally sabotaged their efforts.
So oooooo, no time like a pandemic winter to try again!
The girls and their besties and I made ourselves scarce so the dads could concentrate.
And a mere 5 hours later … voila! Igloo!
It was hard work (I hear)! But it is huge and strong and the super duperest play fort ever!
Thanks, dads!
Magrilless 
Where did you build it? Is it still standing? Would you like some sawdust to insulate it with? Sawdust makes ice and snow last a really, really long time.
That is sooooo cooool!
What a fun, perfect day.