I do not buy decorations for my car, but I might buy one of these. Now you can buy a light saber cover for your rear windshield. Yes, a light saber like on Star Wars.

A company called wipertagstore.com are selling multiple different versions of them in both reflective and non-reflective. You can get blue, green, pink, or purple. You can also get a blaster gun but I don't think it is as cool as the saber.

The light sabers cost between $14 and $17 dollars. All the wiper attachments are meant for the rear window only.