Using a Nerf projectile and rubber band, this can be used to discourage squirrels or other pests.
Be careful regarding what you aim at and the power of the rubber band used.
I had this printed locally using 3dhubs.com (I used Jason in Gainesville, FL and had excellent results).
Paint the squirrel for maximum beauty.
Load the projectile, then pull back the rubber band, aim and let the "repeller" do its work.