Five Star Gift Ideas

It seems like your friend has a unique interest in logic and puzzles, given that they enjoy the concept of mathematical equations with unconventional solutions. Based on this interest, there are a few gift ideas that could appeal to them:

1. Puzzle Books: Get your friend a collection of puzzle books that focus on logic puzzles, mathematical brain teasers, or even Sudoku. These books will challenge their problem-solving skills and keep them entertained for hours. Look for books that specifically mention logic or mathematical puzzles in their descriptions.

2. Rubik's Cube: The Rubik's Cube is a classic puzzle that requires logic and patience to solve. Your friend might enjoy the challenge of solving this iconic toy, and they can also explore different variations of the Rubik's Cube, such as the 4x4 or 5x5 cubes for additional complexity.

3. Strategy Board Games: Consider gifting your friend a strategy board game that involves critical thinking and logical decision-making. Games like "Settlers of Catan," "Ticket to Ride," or "Codenames" can provide hours of entertainment while stimulating their strategic thinking.

4. Mind-Bending Books: Look for books that explore unique and mind-bending concepts, such as "Gödel, Escher, Bach: An Eternal Golden Braid" by Douglas Hofstadter. This book delves into the deep connections between mathematics, art, and music, and might resonate with your friend's interest in unconventional equations.

5. Coding Courses: If your friend has an interest in logic and problem-solving, learning coding can be a great gift. Look for online coding courses or coding bootcamps that focus on logic-based programming languages like Python or Java. These courses will not only align with their interests but also provide them with a valuable skill for the future.

6. Logic Puzzle Apps: There are various mobile applications that offer a wide range of logic puzzles such as "Logic Master" or "Brain It On!" Your friend can enjoy solving puzzles on the go, and some apps even provide new daily puzzles to keep them engaged.

Remember, the best gift is one that caters to your friend's specific interests and preferences. Pay attention to any hints they might have dropped or any other related hobbies they have. By selecting a gift that aligns with their passion for logic and puzzles, you will provide them with a meaningful and personalized present.

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