Hmmmm... cutting off just that bottom piece with the small ferro rod attached, and drilling a small hole in the plastic base plate, could be a nice little addition to a survival necklace or keychain... might need to try it for my edc necklace.
If you want something that's very small but vastly better, check
these out. You can get pure fire steel or a titanium rod with a 'steel attached. I have two of the former and one of the latter and I'm very impressed with them. Lace them into your shoe laces, wear on your neck, etc. A nice product overall.