What to give at a baby shower

Hi all! 👋 I’ve never been to a “real” baby shower (went to one in high school for a friend like 8 years ago lol) so I’m looking for some ideas on what to bring for them.

They don’t have a registry so I can’t look there. They already have 3 kids so to me, I feel like she’ll have most of everything but I can’t really assume that.

Anyways, any suggestions on what to give them? She’s having a baby boy 😌

Also... I don’t know her personally to know much about her. They’re clients of mine.

Thank you!