From Wikipedia:
"A key fob is a generally decorative and at times useful item many people often carry with their keys, on a ring or a chain, for ease of tactile identification, to provide a better grip, or to make a personal statement. The word fob may be linked to the low German dialect for the word Fuppe, meaning "pocket", however, the real origin of the word is uncertain..."
Can you give us some info on how you made these key fobs?