I have some pictures up of my pneumatic tombstone jumper on my props website. It's based on the Vilethings.com pop-up design for the moving arms, but the jumping action comes from the Vilethings jumping mechanism.
I'm planning on using him to spring out from behind a tombstone in the graveyard.
I have to add the pneumatics, but the props page has everything else. This is one of my last major props for this year. I'm headed to Hawaii next week, for work of all things, and I'm taking August off from prop building. I need some rest.
I'll be back on here when I get back from Hawaii the end of July.
The Dark Tomb - Psychological Terror at it's best!
www.mansionofterror.com/props.htm