The real Easter egg there is that Sheila is mentioned in the caption but you can’t actually see her anywhere in the picture!My favorite is probably the first page of Chapter 2, how to make a character, that has the characters from the 80s D&D cartoon imagined as actual characters (instead of weird kids). That is an awesome easter egg and I'm surprised no one has made a bigger deal of that yet.
Now that you mention it...And this is a weird complaint, but I feel like too many people in the art are smiling.
That's one of my favorite ones!!! I think it does a great job of evoking the feeling you'd want to feel while playing that character!And what's up with the Bard on page 65?
I’d rate that as a positive. It shows you what that species is like as a community, just doing regular things, not adventuring.All of the race entry pictures go out of their way to not make any race seem cool, but as mundane as possible.
I think that sort of images would fit in with crafting and stuff like that, not when you're picking a character to play, whose whole purpose is to go on adventures and blow stuff up. I mean, that is the game.I’d rate that as a positive. It shows you what that species is like as a community, just doing regular things, not adventuring.

(Dungeons & Dragons)
Rulebook featuring "high magic" options, including a host of new spells.