Toolmonger has discovered the "ATAX," which they suggest would be the perfect gift for the last man on Earth:
You can either use it as a knife or lash it to a stick and use it like an axe. The high-carbon steel main blade measures 4-1/2″ with the tool’s overall length coming in at 5-1/2″.
With the various metrics laser-etched on the blade, you can tell time (like with a sundial), measure angles, and judge distances. With some slingshot tubing, you can turn the ATAX into an arrow launcher for hunting game. The micarta handle conceals a small storage area for various survival items like matches and twine and MacGyver brand paper clips.
The ATAX costs between $150 and $200.