Famous days are better (homophonic), famous stars get together (homophonic), and famous people (homophonic).
European names can be selected from some European countries, such as place names, river names and well-known names. Good, and it won't be too messy, otherwise the guests will have to think. In addition, I suggest that each name should have some short stories, so as to attract guests. Let Xiao Er explain every time a guest comes, or make a small painting and story in the bathroom and private room.