Glad to hear they didn't come into your house.

I'd bait them in again and catch em on camera. Repeat the conditions of the first heist. Same car, same day of the week, same time of day. Except this time, have a good quality camera taking some really good face shots of the bad guys. It might take you a few weeks before they make their rounds through your neighborhood again, but like a racoon, they always come back for the easy pickin's.

Beyond that, I'd say a burglar alarm would do you some good, and maybe some better exterior lighting. A petty thief would probably be scared off from an audible alarm and lights. You can also integrate a garage door alert monitor if you leave the door open again that will chime inside your house. They even have garage door autoclosers now that will close the door after a certain period.