Five Star Gift Ideas

Based on the information you provided, it seems like your girlfriend enjoys math and puzzles. If you want to find a unique and thoughtful anniversary gift that aligns with her interests, here are a few ideas that might appeal to her:

1. Customized Math Puzzle: Consider getting her a customized math puzzle that features a special message or memory related to your relationship. There are various online platforms where you can create personalized puzzles, allowing her to combine her love for math and fondness for your anniversary.

2. Math-themed Jewelry: Jewelry is always a great gift idea, and you can find pieces that incorporate math symbols or equations. Look for mathematical symbols like Pi or designs inspired by fractals or geometric shapes. This gift would serve as a visual reminder of her passion for math.

3. Math Books: If she enjoys reading, consider gifting her a book related to mathematics or the history of mathematicians. Some popular options include "The Code Book" by Simon Singh, "Fermat's Enigma" by Simon Singh, or "The Joy of x" by Steven Strogatz.

4. Math Artwork: Find an artistic piece that combines her love for math with aesthetics. There are many beautiful mathematical equations and patterns that can be transformed into visually appealing artwork, such as fractal prints or geometric designs. Look for pieces that would match her taste and complement the decor of her living space.

5. Math Board Games: If she enjoys playing games, consider getting her a math-themed board game that she can enjoy with friends or family. Games like "Set," "Prime Climb," or "Qwirkle" can be both fun and intellectually stimulating.

6. Math-related Experience: Instead of a physical gift, you could plan a math-related experience for her. This could include visiting a mathematics museum, attending a math-related conference or workshop, or arranging a private math lesson or tutoring session with a renowned mathematician.

Remember, the most important aspect of any gift is the thought and effort you put into it. Consider her specific interests within the realm of math, and tailor the gift accordingly. Additionally, including a heartfelt note or letter expressing your love and appreciation will make the gift even more meaningful.

Or you can get her a star map with the date of your anniversary.