Anti-theft was a big concern before we hit the road. Vanagons are popular with thieves. This is our home and while it's not super valuable, but we'd be pretty sad if we didn't have it (or the stuff inside) any longer.
We also have the two dogs with us. They can be pretty intimidating.
The dogs are an anti-theft device in themselves, but we know that folks also just like to pet dogs and we didn't want anyone to think they should reach their hands inside the van to pet them. While they're the sweetest things with us, anyone who seems like a threat could get a nasty surprise.
We decided to get some beware of dogs signs and were excited to find these stickers online. They're clearly visible and we put one on each side of the car.