A few ideas:

• Help make Beehaw the place you’d like to live in. Post interesting content in the communities that interest you. Add thoughtful comments. Be(e) nice. Don’t feed the trolls.
• Invite other nice people to join us.
• Donate to support the server costs.
• Volunteer to moderate a community you care about (there will be another call for moderators soon enough as we grow).
• If you have the skills, contribute to the development of Lemmy itself.