iPad Pro 12.9" 3rd Generation
This is my third iPad. iPad 2, then iPad Air 2. I've been a semi-professional musician for the past 20+ years and the original justification for purchasing an iPad was to read song charts on stage. I've been in a lot of cover bands, as well as original bands, and for the cover bands, I simply must have the lyrics and chord changes in front of me. Ever since the 12.9 inch iPad was released, I saw it as an eventuality for me. The large screen makes all the difference when reading charts.
Besides the song charts, I daily use it as a podcast player in my kitchen while I cook breakfast or dinner. I stream baseball with MLB.tv and presently, Apple TV+, other sports and content as well, but generally while I'm doing something else. I sometimes use it as a second screen with my Mac. I use it to read news and books, but it's too heavy to hold for very long.
When the iPad first came out, I thought, meh... but damn, what a solid and useful product it has evolved into.