This device allows you to open metal door knobs, pick up your keys or lose change, even pick up metal utensils with out you have too lift a finger. 

You will need a strong magnet, Velcro or something to strap your hand to the holder and glue (for the magnet)

Place this magnet holder in the palm of your had with a magnet in the slot facing away from you and then put either Velcro or string or whatever you want to hold your hand to the holder. 

Please let me know if I should make any improvements.