For my first buildoff project, I'm going to customize one of my HD drop points into a JD/ Halloween themed "pumpkin carver" There's nothing quite like a 1/4" thick piece of steel with a razor edge!
Here's a pic of another one for now, to give you a rough idea:
The blade is 4.5" long and the overall is around 9". Blade steel is 1/4" thick 440C, with a Paul Bos heat treat. The finished knife above weighs 7.3oz, so the buildoff knife should be in this area also.
I'm still looking around at materials for the handles and sheath, but I'm leaning toward sculpted red and black G-10 scales and a black leather sheath inlaid with red snakeskin- and maybe some filework on the blade.