It's no secret that Pixar incorporates "Easter Eggs" into their films. An Easter Egg refers to a link or clue connecting the movies, like the red star Luxo ball from Toy Story. The Luxo ball also appears in future Toy Story movies, as well as Up and Monsters Inc, among others.

Facebook via Toy Story

Pixar released a video on the Toy Story Facebook fan page showing how their movies are connected. The video shows a connecting piece from last year's Finding Dory all the way back to Toy Story, which was released in 1995.

Have you spotted these Easter Eggs before?