A senior group a friend of mine used to coordinate also made magnets with stitching (like counted cross stitch) on plastic canvas and gluing a small magnet on the back. The cards sounds like a good idea. The papyrus co. makes beautiful hand-made cards. If you haven't seen them they will use a variety of things including little cutouts of felt.
Also used greeting cards could be used to make small gift cards or tags.
A former coworker's mom used to crochet things such as a shamrock and attach a pin to it.