Trick-or-Treat my ride

Sooooo... We just bought a new car. I was totally bummed to sell my Jeep Liberty. I need the 4WD in the winter and I could throw my dogs in the back and head to the dog park. I like my new Sonata BUT no 4WD and I'm not throwing my dogs in a brand new sedan. Hubby knew I was having a hard time so when his parents were getting rid of their Explorer for $1000 he let me know. Of course I bought it. It's in good shape they were just dumping it because they got a new car. It was kinda my Christmas gift. Anyway... I want to Halloween-ify it. Why not? I've never had a cheap car before so I want to make it original.

I want it to look good when I'm done and I don't want to spend a ton of money since the car didn't cost much but I do want it to be Spooktacular. Anyone got any good ideas? The Explorer is white. Tan leather interior.