I made a poster with a glow-in-the-dark secret!
From Bruce Mau’s excellent Incomplete Manifesto (to be clear, it is a page full of great tips for designers and artists) comes a rule I live by:
Don’t clean your desk; you might find something in the morning that you can’t see tonight.
The blue layer is regular silk-screen ink, the invisible layer is glow-in-the-dark! It was difficult to take a good picture of the glow-in-the-dark (this was in my tiny bathroom so it was nice and dark) but this should give you some idea.
I still have around 30 prints, all different (some are in pink & lime!) so if anyone wants one, buy me a beer and we’ll talk!