Be the one who stays after the party to stack chairs. People always remember who helped when the fun was over.

Help that arrives after the fun is over is the kind people actually notice. Everyone comes for the good part, and far fewer stay for the cleanup, when there is no audience and nothing to enjoy. That is exactly why it registers. It reads as respect for whoever had to host, not as a favor being banked.

At the next thing you go to, stay ten extra minutes and do the unglamorous part. Do not announce it and do not wait to be thanked. Over a year that habit builds a reputation nothing else will.