Foldable TVs: Name a more useless product

I will go first: iPad. Its the most useless product I have ever purchased. Zero addition to productivity What is yours?

What is the purpose of folding phones, and how do they enhance the use cases of smartphones? I believe folding phones have emerged due to the saturation point we've reached in smartphone innovation.

Suggest the Most useful Gadget you own Apart from Mobile / Laptop / Tablets.

I feel we are stuck between 4-5 apps daily and not using the phone (the great invention) to it's fullest Suggest ideas that I can try P.S. Android user btw

Mine: transparent display tech and rabbit r1

Choose between Rabbit R1 or Humane Pin. Looking forward to your answer in the comments.