I don't know how you propose a new emoji, so I'm going to try doing it from a blog post.

I would like to nominate the Apple Computer dogcow, named Clarus, for commemoration for perpetuity as an emoji.

It would be like retiring a number of a basketball or baseball player.

It's a classic. Instantly recognizable to a certain generation of developer. A memory of glory days when barriers were being broken in software usability every year. Not that progress isn't being made these days, but it seems so much s l o w e r. 

And if there's room for one more, I'd like to see the icon of Steve Jobs in the Steve Sez dialogs also be preserved as a universally recognized emoji.

PS: Did you know that Clarus was named by people at Apple to mock the software spinoff named Claris, that was started by none other than Bill Campbell, the much-revered Silicon Valley coach who recently passed away.