Vronsky. I too live in an area where high school kids get a Real Kick out of wearing hood ornaments around their necks. I know what I would like to do to their necks. Anyway, I purchased a Hood Ornament Alarm From ACP. Pretty slick; it can be wired into alarm system or wired to your horn: comes complete with harness, wires, & fuse. Under $20.00. Their phone number is 800-992-2018.
I am not affiliated with ACP in any way, just passing on a product I found works for me. Regarding the rear star, perhaps they have something. I am clueless.
Richard