Flip-flops if you decide to shower (I never do)
Plastic bag to put wellies in at the end.
Dental floss (to get the food bits out in case you get a snog).
Mini dress (in funky Kate Moss style)
Over the knee socks that you can roll up/down depending on weather.
Wellies (buy 2 sizes too big in order not to get trench foot also for ease of getting on/off before getting in tent)
Jeans bad idea. Too heavy if they get wet.
Warm but mad looking jacket/coat for evenings.
Pashmina or poncho. Can be used as pillow too.
Umbrella, cool accessory plus you can remain dry and still look good.
Cotton knickers (to reduce probability of nappy rash/thrush/mould after thigh chafing walks with soggy gussets due to no toilet paper)
Swimming costume (for showers or hot weather)
This list is good for both men and women.