It kind of depends on what you want to do, and where you want to be.

A lot of it will come down to how one generates an income. Or chooses how to barter.

For me, I like to travel, possibly chasing Vitamin D? It's not a viable proposition for everyone.

Learn a new language.

Learn Humility.

Learn Tolerance.

Learn a new skill - a TEFL course (Teaching English as a Foreign Language)

I write, which is the reason for the business card and link.

Donate to a Charity. Not simply money, but time.

Learn to build a website, create an App.

Get a YouTube channel, and generate an income, although all that comes from advertising (which is not my particular favourite).

Learn to live more frugally.

Choose wisely. Buying cheap might not be the saving that you think it is, it might just create more waste.

Exercise more; your brain will thank you, and your energy levels will increase.

Chase dreams, they don't all get away.