The money earned from part-time jobs can be used to do many meaningful things. Here are some options to consider:

1. Save or invest: Saving or investing the earned money can increase the value of assets and lay a foundation for future life.

2. Support charity: donating part of the money earned to charity or supporting some charities can help people in need and contribute to society.

3. Study or travel: Taking part in some interesting study or travel activities with the money you earn can enrich your experience and increase your life experience.

4. Support your family or friends: Supporting your family or friends with part of the money you earn can make them feel their care and support and increase their feelings.

5. Start your own business: Starting your own business or career with the money you earn can realize your dreams and make some contributions to society.

In short, the money earned from part-time jobs can be used to do many meaningful things, depending on personal circumstances and needs. No matter what you choose, you should plan rationally and spend your money on the most meaningful places for yourself and society.