Certainly, here are some puzzle recommendations:

Rubik's Cube: This classic 3D puzzle is great for people who enjoy tactile problem-solving. There are many online tutorials available to learn the basics, and once you get the hang of it, you can try to solve the cube faster or with fewer moves. There are even online Rubik's Cube simulators and games that you can play for free.

Crosswords: Crosswords are a great way to exercise your mind while also having fun. You can find free crossword puzzles online on websites such as The New York Times, The Guardian, and many others.

Sudoku: A numerical puzzle that requires logic and patience, Sudoku can be found for free online or in puzzle books.

Jigsaw puzzles: These puzzles involve assembling a picture by fitting pieces together, and can range from simple to complex. You can purchase jigsaw puzzles online or in stores, or find free ones online.

Regarding robotics, while some aspects of robotics can be expensive, there are still some options for trying it out at a lower cost:

Arduino: Arduino is an open-source electronics platform that can be used to create a wide range of projects, including robotics. Arduino boards and components are relatively affordable, and there are many tutorials and online communities available to help you get started.

Raspberry Pi: Similar to Arduino, the Raspberry Pi is a small, affordable computer that can be used for a variety of projects, including robotics. It can be programmed using Python, which is a widely-used programming language that is free to use.

LEGO Mindstorms: LEGO Mindstorms is a popular robotics kit that includes motors, sensors, and programmable bricks that can be used to build and program robots. While it is more expensive than Arduino or Raspberry Pi, it is still a relatively affordable option compared to more professional-grade robotics kits.

Overall, there are many ways to explore the world of robotics without breaking the bank, and by doing so you may discover a new passion and interest!
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