If you were sent back to the roman era and could only bring a backpack of goods. What would you bring?

An Uzi, lots of ammo, some gold, and instructions on how to make steel, precision lathes and mills, lasers, silicone, computer chips, computers, nuclear reactors, internal combustion engines, rifles, the complete works of Sir Isaac Newton, Einstein, Hawkins, and everyone else, translated into Latin, and a bunch of other shit. I'm going to get into Caesar's favor and propel humanity forward 2000 years. Long live Rome!