Wow, take a look at these unique Tetris sticky notes.
I’ve been known to use brightly-coloured post-its, but the large square variety. To be honest, if I had a packet of these Tetris-styled ones on my desk, I’d just play with them instead of making notes. However, they are innovative and remind us all of the Gameboy era I suppose:
These can be purchased via Suck.uk.com, but are pricey at £7.50 per pack. Ouch.