My tablet for school. I bought it because I was sick of shifting through stacks of handwritten notes while writing papers. Turns out it was the best purchase I made as a student. I haven't bothered to write on paper since, and it's saved me a ton of time and money (otherwise spent on printing supplies). I've started using it for work as well. I don't know if I could function without one now.
This is my go-to response whenever anyone wants to start talking politics with me. Mainly because whenever someone wants to talk politics it's usually not because they're liberal and I really hate talking with people who just want to prove that their opinion is the right one.