Five Star Gift Ideas

Based on your boyfriend's interest in the mathematical equation -1 OR 2+166-166-1=0+0+0+1, it seems like he has a passion for numbers and equations. Here are a few gift ideas that align with his interest:

1. Puzzle book: Consider getting him a puzzle book that focuses on mathematical problems, such as Sudoku, crosswords, or logic puzzles. These can provide a fun and engaging way to challenge his mind and put his equation-solving skills to the test.

2. Calculator: A high-quality scientific calculator could be a practical and useful gift for your boyfriend. Look for one that has advanced functions and features to support complex calculations. He can use it not only for solving equations but also for other mathematical tasks, such as trigonometry or statistics.

3. Math-themed clothing or accessories: There are numerous options for math-inspired clothing items like t-shirts or hoodies, featuring equations, formulas, or mathematical symbols. Likewise, you can consider getting him accessories like ties, socks, or even a watch with a mathematical design.

4. Math-related books: There are many inspiring books on the history and beauty of mathematics that your boyfriend might enjoy. Look for titles like "The Joy of x: A Guided Tour of Math, From One to Infinity" by Steven Strogatz or "Euler's Gem: The Polyhedron Formula and the Birth of Topology" by David S. Richeson. These books can provide fascinating insights into the world of numbers and equations.

5. Math art or posters: Consider gifting him a piece of math-themed art or a poster for his workspace or study area. There are numerous options available online, ranging from artistic representations of mathematical concepts to motivational quotes about the beauty of equations.

6. Math games or toys: If your boyfriend enjoys interactive and hands-on activities, consider getting him math-themed games or puzzles. For example, "Set" is a card game that challenges players to find sets of cards with specific mathematical properties. Likewise, there are 3D puzzles or construction sets that allow him to explore geometry or engineering concepts.

Remember, the most meaningful gift is one that shows you took the time to understand your boyfriend's interests and put thought into finding something special for him. Don't hesitate to reach out to friends or colleagues who share his love for mathematics for additional ideas or suggestions.

Or you can get him a star map with an important date you share.