Check antifreeze, brake fluid, washer fluid, and transmission fluid. If you're having someone else do the oil change they probably take of that. Ask to be sure. Check your wiper blades, belts and tires for excess wear. Check wheel alignment. Have your brakes inspected. Check to make sure all of your lights are working. Be sure you have all your insurance information and emergency numbers. If it applies to you, check the kids' carseats for worn straps and proper installation and fit.