iPad 1 was a great device. Mine is still going strong handed down to my sister and her family. iPad 2 is better, but everything always gets better. Though the first generation iPod was the best one as the mechanical click wheel (as long as it didn't fail (and mine still works)) was the superior input device as it was a better tactile experience.
If you don't currently wear a watch, I suspect the Apple Watch first generation will be a useful device for you.