What are some unique Spell focus ideas that your think would work with my character

I'm currently in the process of choosing a spell focus for my character. She's a level 4 war mage, and she's going to be going through some changes soon, one of which is getting a new spell focus. I love to flavour my spells and how I use my spell focus. Swinging around the staff, using the rod to hit the fire bolt like it's a baseball, that kinda stuff. I'm curious if there are any interesting spell focuses you can think of that I may be able to use, as I'm quite stuck. I'm thinking of an umbrella, but that seems rather basic, so I thought I would ask reddit