That can be hardest part. As an artist designing for someone else, it’s extremely helpful to have examples provided.
has a large range of logo designs, if you want to browse and see if somethings catch your eye. Or ask folks to reply with some of their own examples.

Someone mentioned a mood board: that would be less specific logo examples and more photos and colors of what you want someone looking at the logo to see/feel and what you like and don’t like, because what you don’t like is important info …… I worked on a project where the designs made it all the way up to the final stakeholder who didn’t like green, which no one had bothered to tell us. 😮‍💨