Little Tikes Commercial has created a Moebius strip for playgrounds. The “Infinity Climber” recently won a 2004 Industrial Design Excellence Award (IDEA).
Damn, I really want one of these for the back yard…
Update: Boing Boing has posted my submission for this item, and I stand corrected – it’s not a Moebius strip, as there are two twists in the structure. It’s actually a “Double Twist Strip”.