Useful Items for festival

[anything I don't mind]

I am going to festival in the hot weather in august. I was wondering if anyone has any suggestions of what to take that can be useful. Its essentially camping just with a music playing as well, no fires allowed of any kind and no glass.

I have so far:

Tent
Double self inflate mat (bit optimistic i know , can fold down to one though)
led camping lights
led torch
light weight camping sun chair
Cooler bag to keep drinks as cold as i can in the tent without access to chill packs.
sleeping bag
camping blanket for in/outside tent
Shade canopy/tarp if there is no shade left.
batteries
pocket shower
got all the clothes, two hats.
I am still thinking about getting a hammock.

Any other ideas?

 

[anything I don't mind]

Festival is 8 nights long and in portugal, i have 23kg luggage with tap portugal. I will need to take more than just a weekend festival, its more a camping trip with music.

So far i have

lube, extra large condoms, toilet paper, I think if i can fit a full size pillow in that would be best, bin bags and others thanks.

Did you get that list from download festival or something, didn't think of looking for that.