These are the actual plectrums Jon uses. Black, and printed on both sides (monkey-guitar logo on the front, and the slogan "Don't Let Jon Gomm Play Your Guitar" on the back.)
Jon says: "The picks are 0.73mm thick (they're maybe a little stiffer than most picks that gauge) and made of matte Delrin for tone and grip. I designed them to be multi-purpose - to have good tone and a bit of "give" for strumming chords, but still plenty of accuracy for fast lead guitar playing.
Or you can just stick them on your fridge. :) "