Is it packing already travelling?

Today I decided to start planning my trip. It will be a short one for sure, and really really low budget. The first thing I've started asking myself was if I can check this backpack in to the plane.
It's never easy to think about what to take with me while travelling, but in the end I'll stick to the basic stuff, as I want to make this as easy as possible. Thanks to all my couchsurfers, I'm feeling more and more happy about travelling as light as possible.
But now it's time to cook something for lunch :).