No you can easily do them at home by clasping your hands together and making your arms work against each other. It just isn’t as efficient as compound exercises (e.g. pull-ups that also exercise your back).
That sounds very inefficient. Here’s something that gets good results quickly. Tie a string/top to a filled 2L bottle. Attach the other end of the rope to the center of a short wooden pole. Wind up the bottle. Wind down the bottle. Repeat ad infinitum. Quick and easy.
