Upgraded M to XL (accessories?)

I upgraded from a medium to an XL this weekend. I was able to get their demo model XL BGE (used 8 times), convEGGtor plate, and the display model acacia wood table for $899 total. It also came with 2 bags of lump charcoal. I can't believe I got such a good deal!

Now, I know there are lots of accessories for the XL. I know I want to get the 5 piece Eggspander system, but what else should I be looking for?