Steve,
The giveaway idea is a great idea!!!! ,
I think a "newby" contest might be an idea as well, more for those who might own tools other than the Lindsay Airgraver or one of your older model airgravers or even an equipmentless person yearning to give it a try to win a new palm control. For instance newby might be someone that has yet to even engrave onto something other than a practice plate or even someone without engraving tools, perhaps a "Engraving Layout" contest as even a non engraver interested in engraving might practically overnight have the a helluva good start on equipment.
Just a thought. Of coarse the drawing would have to be something that could be accomplished by the "average-Intermediate" engraver. Then the winner would engrave the layout, Maybe I could get my Knifemaking father Elvan Allred to build a knife to design the engraving for and the winner could engrave it once they buy the other needed equipment Vice ect. and Keep or sell it.
(Small straight knife, full metal or large bolster most likely)
What do you think?