(UK,Australia,colloquial, of an object) To go missing from its usual place; to be lost or stolen.
The paper shredder seems to have gone walkabout.
Used other than figuratively or idiomatically: seego, walkabout.
1995, Nigel Taylor, A vet called Nigel (page 58)
You could almost hear him shout 'Geronimo'. It was bound to end in tears. Sure enough when his owner had let him go walkabout on the kitchen table he had taken his chance, raced for the edge, and made his own giant leap for hamsterkind.