I came across these fun Mushrooms on an outing to a flower farm in Carlsbad recently. I figured these would be such a fun thing to make or purchase.
Just think if you didn't built it just right, you could always say it's meant to be crooked!
Here are some videos how to make concrete spheres. For those of you who are very crafty some adaptations might work to create the mushrooms.
Casting the Spheres
Removing concrete from Mold
Joining the Spheres