Going to burning man this year for the first time, need advice please?

Ive ready all the data at burning man.com cause I know thats the first place people will tell me to look. Ive got a camper trailer, and im planning on making a theme for it, along with several other things. What things are a good idea to bring to burning man, that most people dont think of, or simply overlook? Ive got my own shower, toiler, generator, tickets, 4x4, small old bicycle for the playa, costumes, poi, Multiple Flags for finding people and the camp. I dunno. Seems like im forgetting something, or I prepare better for it in some way...any help please experienced veterans?