Newbie 570 Owner – Accessory recommendations?

I am excited to learn from everyone! Decided to buy my wife and I a 570 EPS because I needed the "ranger" type box on the back for misc chores, needed the steering wheel so I could pull a sprayer and easily run the pump, wanted the side by side versatility for two people and needed it to fit on the back of my truck or in my cargo trailer. I hope the 570 lives up to the reviews, because my wife LOVES off roading and I couldn’t justify buying her a jeep (and it looks like there are many more places to go play with the 570!)

I am wondering what accessories are "Must haves" or too damn fun not to have?