Eat something with chocolate while drinking something made with chocolate.
See a friend in the city and enjoy the sun (which isn't existing in Stockholm today, unfortunately) while catching up and drinking coffee coolers.
Enjoying some delicious fruits in yoghurt.
Do some serious shopping.
Eat some more food with chocolate.
Think deep thoughts.
Being able to relax in bed all day without any stress.
Spend some quality time with my shoes and play dress up.
Look through old family albums.
Make something colourfull.
Make great inventions for out future society.
So now you have lots and lots of options of what to do on this wonderful day! And now mine and L's little break is over so we better get back to our nerdy study mood.