The next time you come across a bar magnet around the house place it in your work area somewhere - like stick it on the side of a metal cabinet, inside the lid of a tool box or somewhere else that you can remember where it is.
The next job that requires removing screws or bolts - like taking apart the lawn mower, take your trusty magnet and stick it to the frame of the mower and just throw your bolts up on it. It's amazing.. they will be there when you get ready to put the thing back together.
... I wonder.... magnet therapy ...you think it would have any effect on hooks?