My Apple Vision Pro is perfect for this, especially with the dual knit band. It really helps me just focus on reading as well, unlike a laptop or something where alt-tabbing is super easy and the (enlarged) book isn't taking up most of my FOV. It's an expensive solution, though, and not for everyone (for example my wife's neck is way slimmer than mine and it would injure her over time).

(And the pinch the page to turn it like a real page is the most fun thing in the Apple Books app).