20. Battery-powered Buzz
The movie: Toy Story 3 (2010)
The Easter egg: The batteries that power Buzz Lightyear (as seen in Toy Story 3) have a BnL logo on them, which is a reference to Buy N Large, the company that controls all government services in WALL-E.
How obscure is it? Even if the batteries actually said Buy N Large, this would have been a difficult one to notice, but BNL? If you spot it, you should get immediate entry into Mensa's inner circle.
19. WALL-E on the wall
The movie: Finding Dory (2016)
The Easter egg: During Finding Dory, Hank offers a big hand (or eight) in Dory's escape. Yet amidst all the commotion you'll do well to notice a calendar pinned to the far wall that appears WALL-E themed with the name at the top.
How obscure is it? It's genuinely one of those blink-and-you'll-miss-it moments; and even if you're on the lookout it still takes a keen eye to spot.
18. Sid's career trajectory
The movie: Toy Story 3 (2010)
The Easter egg: Sid, the next-door neighbour and twisted antagonist from the first Toy Story film makes an appearance here as a rubbish clearance man. He wears the same skull t-shirt as before and is voiced by the same actor, Erik von Detten.
How obscure is it? We'd recognise that black-and-white skull t-shirt anywhere. And Sid ending up as a rubbish man certainly has a certain poetry to it.
17. Up and away
The movie: Toy Story (1995)
The Easter egg: It seems that Toy Story's Andy knows - or is related to - Up's Carl and Ellie, as a postcard from them can be seen on top of his dresser.
How obscure is it? If you spot the postcard, can read the handwriting and recognise the names on it? Yes, wed say this one was obscure.
16. Jungle gymin'
The movie: Inside Out (2015)
The Easter egg: As Woody eyes his escape in Toy Story 3, we get an overview of Sunnyside's playground, which looks exactly like the jungle gym Riley has a memory of in Inside Out.
How obscure is it? It's a small detail in busy Toy Story 3 scene, but it's not hidden per se. It'd take a good memory to connect it to Inside Out, mind.
15. Fish out of water
The movie: Monsters Inc. (2001)
The Easter egg: In what was originally a sneaky homage to Pixar's next release, Finding Nemo, we see Boo offer up her Nemo toy to Sulley in Monsters, Inc., just before he leaves her room.
How obscure is it? Another simple sight-gag. The real test would be if you got the reference when Monsters, Inc. first came out... a full two years before Finding Nemo.
14. Car crash viewing
The movie: Cars 2 (2011)
The Easter egg: During the chase through London in Cars 2, the Lemons crash through a pub wall and in the background you can see Brave's Princess Merida and her family depicted as cars on a tapestry.
How obscure is it? Well the tapestry itself is easy enough to spot, but car versions of Merida and her family? Even now, were still unsure who's who.
13. Heimlich manoeuvre
The movie: Toy Story 2 (1999)
The Easter egg: Heimlich from A Bug's Life can be seen climbing on a branch in Toy Story 2 before Buzz Lightyear pushes past him.
How obscure is it? Of course, it could be any old caterpillar, but the blooper reel during the credits confirm that it is Heimlich. This is one that you'll really only be able to spot on repeat viewings.
12. Mime control
The movie: The Incredibles (2004)
The Easter egg: Supervillain Bomb Voyage from The Incredibles appears in the background of Ratatouille as a mime.
How obscure is it? Well, Bomb Voyage is a French mime-like baddie, so it's not too much of a stretch. Of course, it's hard to imagine him taking some time out to entertain kids on the street.
11. Wood works
The movie: Brave (2012)
The Easter egg: A wooden carving of Sulley can be seen in the witch's shack in Brave.
How obscure is it? Easy enough to see once you know what you're looking for. The real question is why? Has the witch seen Sulley? We demand a crossover movie!