So there are a million different types of wall stickers.
On my wall I have only every used expensive, guaranteed not to leave marks, wall stickers. The down side being they are so expensive! So I have only have small ones.
I would love one of those massive tree ones or similar ones that act like more of a wall paper effect. However the good brands of them are in the hundreds.
So... are all wall stickers made equal? We have been given some from places like cotton on kids for birthdays etc but I have been too scared to stick them on because we rent.