Pro-tip #1: No-damage poster hanging
This idea falls into the “so obvious once you see it” category.
As someone who has yet to find a cheap, easy, and fuss-free way to hang posters, it was a god-send.
- Stick 4 paperclips to your wall with masking tape, making sure they’re each at the corners where the poster will hang
 - Use small magnets to secure the poster against the wall.
 
That’s it. And it comes right off, when you need it to!
h/t: Recomendo