Since mine came with a winch, the first accessory I got was a cheap rear bag to see if it was something I would use a lot. I found the bag VERY useful! The quality was lacking and has ripped out in a few places, but it did it's job in letting me know haw useful extra storage is. I am picking up my Yamaha rear box at the dealer I bought my Kodiak from this weekend. I got a 10% discount for buying the beast there, bringing the price to $185. I am giving up the rear seat that was on the bag, but i don't have a lot of riders anyway besides the beagles, and they can ride in front of me on the storage compartment after adding something for their paws to grip on.
I hope your Kodiak treats you well and that you have lots of good, safe fun on it.
Welcome to the forum!
: )B