If you hurry, you can still get a Victorinox USB keychain knife. Detach the USB drive, use it for something else, and mill a fire starter to fit the empty slot. Just an open hook at the pivoting end to leave it in the frame, or remove it completely.
Something strange is going on with the "assault model" of the USB keychain knife. I paid $200 for the all-up version with 32GB, a fingerprint reader, laser, and IR projector controller. Now it's going for about $750. A "naked" USB-only device is about $8 and up (for a small amount of RAM). Anything with a knife, light, laser, or scissors on it is well over $100. RAM upgrades are relatively cheap, but a bit more expensive than cheap generic chicom USB drives. Besides the custom packaging, they have been tested by independent labs to meet and far exceed all the EU standards for RAM that everybody claims to meet.
For $158, you can get still(?)this Alox model with 32GB, knife, file, and scissors. But no target designator or remote detonator. Something fishy definitely going on, waaaay under the radar.