I own 17.3 kg's worth of things. 5 shirts, 1 jacket, 2 pants, 1 short, 4 socks, 1 pair of shoes, 2 backpacks, camera with 3 lenses + tripod + odds and ends, computer, Ipod and cellphone. And most importantly, a hat.
I do own other things, namely my work tools and work clothes, along with ungodly amount of paintball stuff. But it's 6000 km away
Don't even own a bicycle to be honest yet.