You can jump start a manual car without jumper cables and without another car. You'll need your car to be on an incline.
Hold down the clutch and get the car into second gear without starting the vehicle.
Put the key into the ignition (don't try to start the car just yet).
Push the car down the hill.
Hold the clutch until your car is going about 5 miles an hour.
Release the clutch—the car should start.
If you aren't conveniently situated on a hill, you can still jump start your manual car without cables, but you'll need much more help pushing the car.