The cheap ultra-light tripod... I hope my english is good enough to explain this old trick.
Take a piece of string, knot it to a tripod screw, screw it into the camera body. If you need a tripod let the string hang down, put your shoe on the loose end and tauten the string by lifting the camera up. You look like a halfwit with this accessory, but, voilà, 1/8 second handheld without a heavy tripod. In many cases this will be enough, one more reason to leave the expensive carbon masterpiece and the magnesium ballhead at home.