The theme this year for Burning Man and SL's Burn2 event is "Cargo Cult". It takes some thinking to wrap your head around the theme, but it is awesome!
The Man rides a crate of gems, not valued for their representation of money and wealth, but for the light they refract and reflect.
Small enough to wear as a necklace and it does not protrude to far. If anyone knows of a script to work as a wearable hinge (door), please let me know, and I will modify it.
Available as a freebie in the Market Place.