Here are some cool hobbies for problem solvers:

- **Playing jigsaw puzzles, crossword puzzles, and brain teasers**. These activities challenge your mind and improve your logic and memory skills¹.
- **Playing chess**. Chess is a classic game that requires strategic thinking, planning, and creativity¹.
- **Learning to draw or paint**. Drawing and painting are expressive hobbies that can help you develop your visual and spatial abilities, as well as your imagination¹.
- **Learning how to play an instrument**. Playing music can boost your cognitive functions, such as memory, attention, and reasoning¹.
- **Mastering a new language**. Learning a new language can enhance your communication skills, cultural awareness, and brain plasticity¹.
- **Participating in trivia contests**. Trivia contests are fun and competitive ways to test your general knowledge and learn new facts¹.
- **Knitting, baking, or woodworking**. These hobbies involve creating or building something with your hands, which can improve your fine motor skills, concentration, and problem-solving abilities⁴.

Source:
1. 150+ Hobby Ideas Broken Down by Interest and Personality. https://hobbylark.com/misc/How-to-Choose-a-Hobby
2. Hobbies Make You A Better Problem-Solver - HobbyTwin. https://hobbytwin.org/hobbies-make-you-a-better-problem-solver/
3. Why Your Hobbies Make You A Better Problem-Solver - Forbes. https://www.forbes.com/sites/theyec/2020/05/20/why-your-hobbies-make-you-a-better-problem-solver/
4. How to find a new hobby - 40 ideas to try - FutureLearn. https://www.futurelearn.com/info/blog/find-a-new-hobby-lockdown