Firefly is a tailor made fire starter for your Swiss Army Knife https://www.kickstarter.com/projects/740457940/firefly-the-ultimate-swiss-army-knife-accessory
What is the Firefly?
The Firefly is a custom sparking-steel fire starting tool designed to work seamlessly with a large variety of Swiss Army knives.
The Firefly is tailor made to replace the toothpick in a Swiss Army knife or tool, it is plug-and-play, and no knife modifications are required.
Pocket knives date back to the Iron Age, which is a really long time ago. Dating back to 600-500 BC a pocket knife was discovered in Austria, and it had a bone handle. So, it is safe to assume that pocket knives have had their use for a long time.
Well thanks for that comment Ernest. Cheers, Steve Jones. PS I have previously posted about ancient pocket knives and the like tools.