Somewhere I read (was it Clarke?, Asimov? ... who knows) that you could pitch a baseball on the surface of Deimos, wait some number of hours (minutes?) and it would have orbited and returned from the opposite direction, you could then hit the ball with a bat and some time later catch it on the re-orbit and declare yourself out.
Escape velocity is just around 5 m/2 so don't pitch it too fast or it won't come back! Even a Little League pitcher should be able to throw a ball at 20 m/s or so.
If you can jump around 128cm high on earth (measured at your center of mass), you can accelerate yourself to more than 5m/s upwards.
Most healthy adults should be able to do that, especially with a running start. It's about as much as you need to do to get a passing grade in PE at age 16 in most places. Also in this hypothetical you don't have to fight much gravity while accelerating - only inertia.
Probably difficult to do it as a high jump, but a person on a bike hitting a small ramp could do it no problem, assuming you could even find enough traction to get going fast enough in such light gravity.
