lol um, I don't know if they count as posters, but I have 18 pictures on my wall of art I really like, then a poster of the train Mallard, then a poster which is a painting I did of this adorable cat we "met" on holiday. All very neatly placed. Then I have about 5 other picture frames and several postcards and cutouts stuck on the wall.
www.mycutelobster.co.uk
"Of course it is happening inside your head, Harry,
but why on earth should that mean that it is not real?"
/ 
Then I have about 5 other picture frames and several postcards and cutouts stuck on the wall. 
