The clever guys over at The Russians Used A Pencil have put together a simple hack that makes the iPad 2’s Smart Cover compatible with the iPad 1.
Magnets were fitted to the iPad 1 to latch onto the magnets used within the Smart Cover.
To place the magnets, I stuck them first to the magnetized hinge of the Smart Cover. I slid them around until they became locked into a position. This ended being asymmetrical, but I didn’t mind. I then lined up the cover with the iPad and used masking tape to mark where the magnets should be placed. I wanted this to be a somewhat permanent solution, so I used super glue to affix the magnets to the iPad.
(Via 9to5)