This is my mini 2D pixel tree. It uses a 900mm plant trainer from Bunnings (used upside-down) and 41 LPD6803 5V RGB pixels.
An APC718 pixel controller board (running the optional 50 pixel firmware) is controlling it. The power and DMX are via the RJ45 input in P-DMX mode.
Each “flat style” pixel was attached to the wire frame using two zip ties.
There’s a video of it in action on the 2013 video page.