an ICBM/Long Range Missile and a space shuttle filled with a lifetime's worth of supplies
launch the missile straight up into the air and get the forget out of there; no 10-year old would be able to pilot a space shuttle, but a lot of them could probably figure out how to fire the missile , so I'd effectively exterminate every 10-year old on the planet as I drifted off into space to live in solitude for the rest of my life