The question might sound a tad silly, but I'm actually trying to solve a real problem.
Our team room has a glass wall, which we also use as our kanban board with hand-written swimlanes (= status) and sticky notes (= tasks).
The glass wall also has a door, and oftentimes when someone enters the room, sticky notes fall to the floor (it actually happened while typing this).
At best, you simply put them where they were. At worst, they end up in a different swimlane.
So, which sticky note is the stickiest?