Imagine yourself stuck on an Island, and you can only bring 3 items. There are two ways I would answer this: realistically vs unrealistically.
Realistic answer:
I would bring survival tools. This would include an axe, heavy-duty string, and water purification tablets. You can make wooden tools for various purposes in the wild with an axe. Heaving duty string can be used for fishing lines and shelter. The last one should go without question. If you don’t have clean water to drink, you’ll have fun running around on an island and having stomach problems. I think I could survive, at least for a while, with these tools.
Unrealistic answer:
I would honestly bring my Xbox, TV, and journal. After some major relaxation, I’d probably want to reflect on what I am doing on an island. Would I go insane? Maybe, but I’m more likely to find the initial experience a little vacation, especially with entertainment.