i have an umbrella, tobz beaker from e38, some power steering fluid, gearbox oil, engine oil, bog roll (used to see if i have any oil in), an interior light lense (dont know where that came from tbh)
basically its full of things i need to keep my car going!
EDIT: forgot to add, I have 2 x 2 litre coke bottles full of water too as my car tends to like a bit of water now and then