This shade can be clicked directly on to a fluorescent light tube. The variation in thickness makes for a nice translucent effect. Inspiration for this design came from phototaxis: the attraction to light that insects such as moths have. That, and the observation that the boring 'bare' light tube in my girlfriend's kitchen could use a touch of creativity.
This version is fit for T8-tubes (1" in diameter). More versions, including other butterflies will follow.