You know, I don't think there is a place to see all of them. Most yes, but each one available today? No, I don't think there will be. There are just so many and some only in some parks. The Google images are great but their Ears and Ear Hats come and go pretty fast. Some of those on Google may no longer be there so be careful in getting your heart set on a certain one and find out you can't locate it.
I love the custom ear idea. I was all set to order one for myself until I got the 60th Anniversary ears from DL. They are awesome and are now my ear of choice.
ETA - In watching that video I see that even that shop doesn't offer all you can find. For instance, there are numerous animal print ears at AK that I didn't see in the video.