The Gerber Bear Grylls Fire Starter makes some incredible sparks. Pair this with some cotton balls and dry tinder, and it will easily get a fire going. It's small and light weight and will work even if wet.
It's also a lot of fun to use and show off.
The You Tube video Below from CutleryLover gives a good review of the Bear Grylls Fire Starter
As an Amazon Associate, I earn a commission from qualifying purchases.