For a walk around local woods / park I have a
regatta packable 25l bag, containing,
water [at least 500ml]
couple of apples, maybe pears & oranges
hammock
tarp
water proofs
hat & gloves
pencils
5p plastic bags
dog poo bags / nappy bags
wood gas stove
12cm billy can inc packet rice/pasta, cup a soup, tea & coffee
large insulated cup
small insulated cup
2 sets of cutlery
bit of cloth to hold hot things
meth spirits
fire lighting kit
sometimes my mora [not often though]
frizbee
sticky velcro ball catch game
tennis balls and rackets
shuttle cock and rackets
I'll usually have the kids with me so having things to play with, to make a game and have a laugh is important.
It wouldn't take much more to make it into an overnight kit
although the regatta pack straps are a bit pants, so I'm working on a method to attach it to a yoke set I've got lying around.