Okay, here is my entry. I just made it this past weekend. I am hoping to put a pop up skeleton in it. The fact that my daughter is in one of the pictures is purely accidental and is in no way meant to sway the judges. Okay.....maybe a little.
15 1"X 6" x 6' boards ($25.35)
2 boxes of 1 1/4 drywall screws ($10)
Total = $35.35 plus tax
Time= about 4 hours over two days