If I had an extra hour or a few hours a day when I had free time, I wanted to help people online, something like support or something like that.
Why do I want this? The answer is: It brings me pleasure when I manage to help someone at least a little. And also when I listened to people on the Internet, just random people, they didn’t even ask for help, I somehow instinctively felt that they had some kind of problems by the tone of their messages, and in the end I managed to cheer them up at least a little.
Depends on your interests:
As far as some sort of one-on-one support service, I’m not too sure of online services for that (beyond helping out in specific forums when people ask questions).
You can help out with a variety of different research projects over on the Zooniverse:
https://www.zooniverse.org/
You can help by contributing to the map around your area: https://www.openstreetmap.org/
Help out with research on wildlife in your area:
https://www.inaturalist.org/
Contribute to Wikipedia:
https://www.wikipedia.org/
If you feel passionate about consumer rights, you can contribute to the wiki here:
https://consumerrights.wiki/w/Main_Page
If you like to tinker with electronics, check out Fulu Bounties and get paid for helping to get around DRM on refrigerators or on an Xbox. This has the potential to help a lot of end users as well as prevent E-waste. https://bounties.fulu.org/