Some people actually did that not far from me.
One guy’s house was an endless optical riot of synchronized flashing lights and his yard, an obstacle course of decorations.
The house next door was dark, save for the arrow and DITTO on its roof.
LOL! That made my day.
Now that’s just funny!!
There was a cul de sac in my old neighborhood that did this for at least 15 years until the original neighbors started moving away. Every house cooperated and it was an amazing thing to see. I think you could have spotted it from the International Space Station. Awesome.