Can you do free weight exercises with heavy things with handle instead of weights?
No. Not really. You shouldn't.
First, because dumbbells and barbells are balanced. You are lifting weights very near of the maximum capacity of your bigger muscles. An imbalance might put a sizeable chunk of that weight in some small auxiliary muscle, and that will ensure some kind of lesion.
Also, you need to learn proper form, the correct way to lift those extreme weights. Is hard enough to learn with proper equipment; much worse to learn with improvised implements.
Look, lifting weights is wonderful, and very, very healthy and rewarding done properly and with security. If you do that with weird equipment, and without proper form, chances are that you'll be injured in some way in less than a month; either that, or you'll be lifting too light, and doing nothing but waste time and effort.