Hi, Ola, and welcome. You've asked a question that you're going to get a million and one different answers to.
As people have said, look through the photogallery for more ideas that you can see.
My only advice would be to sit down and plan, not just your next modification/change but the 3 or 4 after that. Try to create a mental image of how you want your bike to look in 5 years time or so. It means not spending money on mods that don't fit into the big picture but it might be that 2 mods can be done at the same time, saving you time and/or money in the long run.
Hope this helps. Post pictures when it's done.
Neill
PS The title of this thread is 'original'; just because no-one's done it before doesn't mean that you shouldn't do it if you like the idea. Do it. If it doesn't work then at least you tried. If it does work, then you've got something original to be proud of.
