TL;DR: Three Zelda items in Skyrim on the Switch! (Official, not even a mod or anything.)
I love game cross-fertilization, and often it's official homage to some piece of sci-fi or fantasy in a game (lots of examples here in my blog, but really I only have a very small amount overall).
Recently I looked at the Easter Eggs page for Skyrim, which has Easter Eggs from a wonderfully wide selection of sources and lots of homage. More recently I was watching some Skyrim on the Nintendo Switch, and wondered if there was a use for the amiibos, and, indeed, there is!
What's super cool is that they give you a chance to get three Zelda items from the Switch's beautiful Zelda game (Breath of the Wild), the tunic, shield, and sword.
Here's the shield (with the tunic and sword) from an image on the wiki (linked to the wiki, not copied here, so maybe it will break one day), it's awesome!