Sounds like a good one!
I was interested in the enter versus return key thing, and it turns out the key was originally named 'return' after the button on the original mechanical type writers that returned the carriage back to the beginning of the line. Enter and Return mostly do the same thing on computers nowadays but there are some minor variations for certain software on Macs or something. Who knew?! :)

Yeah, a surprising amount of keyboards do. When I started making this gif I tried to find a suitable return key photo online, but in the end I took a photo of my own keyboard and used that :) . It's a pretty basic Dell USB keyboard.