Sticky Notes
The page markers I currently use:
They're from Flying Tiger Copenhagen.
They're a bit too papery to be my favourite ever stickies. Also, it's not uncommon to find a residue of gum from the previous sticky on the one you're trying to use, so it refuses to leave your fingertip in a slightly unsettling way.
Still, they're very good value and I like the range of colours. 7/10.