Posters?

[powdermonkey.livejournal.com]

Hi folks, this isn't really crafty, more one of those decoration/howto questions that you're all so good at answering :D

I have these four gorgeous Harry Potter OotP banners that I want to hang on my wardrobe doors, but I really don't want to damage them because they're so new and shiny. If I use tacks there'll be pinholes, and that blutac/sticky putty stuff tends to leave a little oily stain. Do any of you have nifty tricks for displaying posters and keeping them nice?

Oh yes, I used to post and comment here as poo_head, I've recently changed names.