Congratulations to your friend on finishing her PhD in computer science! As for gift ideas, here are a few that might be perfect for someone who is interested in computer science:

1. A personalized computer science-themed coffee mug
2. A coding-themed board game or puzzle
3. A subscription to a coding tutorial service or coding book
4. A smartwatch or fitness tracker to track her daily activity
5. A custom-made laptop or computer bag
6. A set of high-quality computer or gaming accessories
7. A pair of noise-canceling headphones
8. A comfortable and ergonomic office chair
9. A smart assistant device, such as Google Home or Amazon Echo, to automate daily tasks
10. A donation to a charity or organization that promotes technology education and access.

I hope these ideas help inspire you and that your friend enjoys her gift!
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