These strike me as better-than-gimmicky--Joshua Callaghan's smart, simple graph sculptures. Could make a great grade/high school assignment, too--students each contribute a sculpture graph--let's say they're doing a unit on a certain war, or Native American history, or labor, or something--and create a sculpture garden-like exhibit for parents to walk through on back-to-school night (or to keep as an installation in the school). Via Waxy.
Military Spending by Nation, painted wood
Consumer Confidence, 2006-07, brass, wood
Very Concerned, Somewhat concerned, Not at All Concerned
wood, paint, 4"x12"x50"