Charity work is the way imho. You can support an NGO with your skills, contribute to an open source projects or challenge yourself with a side project that will be interesting for you and good for others. In my experience, it makes it a lot more motivating. There are orgs connecting tech people and NGOs, you might want to look into that, e.g. tech to the rescue: https://app.techtotherescue.org/available-projects?