Yeah anything really, just wanted a LN paywall to get in. Like 10 sats to get in and to prove you're not a scammer etc.
Discussion
It depends how technical you are.
The easiest way i can think of is to host a hivetalk.org room.
Add password protection.
Ask people to zap you 1,000 sats for the password.
DM them the password over nostr once zapped.