All the accessories and equipment you can think of to complete the job as efficiently as possible.  From chamois, brushes, wash mitts, buckets, wiper blades, wheel trims, bulbs, car & seat mats, polishing machines & buffing heads to much larger equipment such as professional pressure washers & vacuum cleaners.  Well know brands such as Karcher, Numatic, Flex, Flexipad, Martin Cox & Grippaz to name just a few.