Victorinox's Remade In Switzerland range of products uses actual old Swiss army artefacts, upcycled to become brand new pieces. Like this Swiss army knife, which has been made from old horseshoe nails. You can literally be hard as nails now.
Only 100 of the knives have been made, and while the pricing hasn't been confirmed by Victorinox or designer Christopher Raeburn, expect them to cost somewhere in the vicinity of a pack of nails and a horse. [Remade In Switzerland via Swiss Miss via Core77 via D-Build]