Another Odd Discovery In My Yard

I have a pretty decent size yard at my new house. Its on an acre and a half. So I am still discovering things I haven't seen yet. I have posted pictures before of those weird Blair Witch things in my trees. I had a shovel painted with a weird message. And now this. I found this the other day and again, it's very strange. It looks like its a mixing bowl that was painted to look like a magic mushroom. Very random. Who know what other secrets and treasures I will find next!