• step in and help review a few PRs

• help the project triage/reproduce bugs

• if code in the PR looks complicated or is hard to understand, ask for an explanation

• express your gratitude to the maintainers

• make your company sponsor projects they depend on

https://mastodon.social/@bagder/112194895793007918

Daniel is the creator of cURL : https://daniel.haxx.se/blog/2021/03/30/howto-backdoor-curl/