Here's an update on my "dash", which pales by comparison to some in this thread!
No need for bike computer, music station, GPS since my android smartphone does it all.
Except for the cellphone case, there's a air-horn, simple bike bell for pedistrians and a extra flashlight mount which doubles as a MD80 video camera base when turned upright. Also my Blackburn Flea 2.0 light is placed on the left of the stem (not shown).
