Drywall cleats
(http://www.kk.org/cooltools/archives/freehand2.jpg)
Details here
http://www.kk.org/cooltools/archives/001178.php
Too late Glenn, I could have used a set of those about a month ago. ;)
Sorry Jonesy- Just getting my bookmarks back up on my new computer, so I'm a bit out of date.
Looks like it would be an easy item to fabricate out of hardwood. Nothing like stealing ideas, eh?
And for every possible other drywall Item:
http://www.all-wall.com/
I made several on-line purchases with them.
If the Wobble-Light came in battery operated form I'd get it. Unfortunately, the first place I'll be building will be without electricity--although I have it down the hill a good ways.
(http://www.all-wall.com/acatalog/WL175-tn.jpg)