Beaten to it

Ever since I started taking Advair, I thought someone should put a whistle or a light or something on it so you'd know you were taking it correctly. Apparently, someone now has, with the advent of the Funhaler. This is all well and good, but something about it (particularly the "exploded" diagram) makes me think that it will soon have interchangeable parts and be much like Habitrails, a few of which can be seen here.