Agatha, especially Marple-related puppy names?

Hi! I hope this is okay to post here, but I’ve been compiling ideas for puppy names for my new puppy, and I would love some help - if possible - brainstorming some pretty ones? I especially like names that are not names (e.g. Magnifying Glass haha), and I also like two-part phrases that could work as names, and anything ending in “a” too!

Thank you so much!