talkmagic.co.uk

Greg Arce has a cool effect using a map, called You Are Here from his Simple Minded book.

A spectator marks a spot on a map with a dot sticker. From across the room, you demonstrate the ability of remote viewing, describing the spot the spectator freely marked.

I've used Paul Stockmans Impossible envelope for a routine using a road atlas of Europe ... Knocked 'em sideways and has good patter applications.