This year I decided that my pumpking needed a little more light. So i started looking around my parts box and found a TV1J star that I had never used. So I hooked it up to a 4.5V 500ma powersupply, and attached it to a spare piece of aluminum. I then cut a hole in the back of the pumpking put the assembly inside and held it in place with some nails, and Voila a Luxeon pumpkin.
I Imagine that this think is putting out around 45 lumens!
in the third pic you can faintly make out the projection on the wall that the pumpkin makes (its much brighter in real life). It stands out very well from the street, and after being on for an hour and a half teh emitter was barely warm.
The design on the pumpkin is meatwad from Aqua Teen Hunger Force.