Here is an image of it. I have others but they are too large.
Lemme apologize in advance if you're not looking for advice. Cause this post is way too much fun.
If I came home and that shit was on my door, I'd remove it and dismantle it out back, while laughing at it. I'd focus my mind on my dominance over the piece, visions of pissing on it, or growing till my head was in the clouds and picking it out of my teeth. Anything that reinforces my dominance over it. Laughter reinforces dominance nicely.
Try to achieve a mindset of laughability at the thought that this little craft show is gonna effect your trajectory in the slightest. Spitballs against the battleship, baby! Maintain this mindset as you dismantle it thoroughly.
If you fear it, it can bite you. Don't fear it. Feel stronger than it.
Then it's time to play Naked and Afraid with your unwoven hillbilly macrame', (good, belittling epithets reinforce your dominance). I'd burn it. Do something ritualistic. Utter annihilation. If it ain't just kids, the sonuvabitch'll be back with something smaller to hide on your property. Ritualistically destroy it and claim dominance over the thought form. Do this any way you like- simply stating it like a baddass can work. That way, when the little punk hides the next one under your mulch, you don't hafta worry about it.
Ten to one, it's a buddy of yours fucking with you. Or random kids. If it ain't, kick ass and take names.
And then maybe start making an enemies list?
That's what I'd do. If somebody put that on my fucking door. That ain't cool.