Really freakin' strong MAGNETS
Wow!! This sounds like it'd be incredibly cool to play with- assuming you could manage to keep from losing a finger or something. Ultra-strong magnets that can affect objects all over a room. Click on the above link and scroll down to "super magnets." From the warning on the site:
Beware - you must think ahead when moving these magnets.
If carrying one into another room, carefully plan the route you will be taking. Computers & monitors will be affected in an entire room. Loose metallic objects and other magnets may become airborne and fly considerable distances - and at great speed - to attach themselves to this magnet. If you get caught in between the two, you can get injured.