Tennis ***** in the exhaust to keep anything from crawling in there.. blocks for the wheels if you have a 6speed.. I was told moth ***** in the engine bay help keep rodents away so that's what I did last year.. fabric softener sheets inside the car to keep things fresh! and yes, fuel stabilizer and a trickle charger should both be high on that list.. I also put cut up pieces of rug under each wheel to try and keep the tires from getting flat spots