Tell us what's in your backpack for the fling?

I went to my LBS to stock up on goodies for the fling. There was so much choice. I am thinking this is what one should take. Anything missing????

1 x Spare tube (presta)
1 x Tyre Repair kit
1 x Small hand pump
1 x Set tyre levers
1 x Folding toolset
6 x Cable ties
1 x Derailer cable
1 x Derailer hanger
1 x First aid kit
1 x Whistle

2 x Litres of water (or some other concoction!)
6 x Gel packs
3 x Trail bars
1 x Banana