The Disney logo features a green beam of light, and the logo gets beamed up.
One of the photos of Nani, Lilo, Stitch, et al. displayed at the end has them posing at the gate of Graceland, continuing the story of Lilo and Stitch's love of the music and style of Elvis Presley.
One of the photos of Nani, Lilo, Stitch, et al. displayed at the end is a parody of (or tribute to) Norman Rockwell's painting "Freedom from Want," one of a set of four paintings inspired by President Franklin D. Roosevelt's January 6, 1941 address to Congress enumerating "Four Freedoms."
During the end credits, we see a wall of various photos featuring Pleakley, Lilo, Stitch, Jumba, David, Nani, and Cobra Bubbles together behind the credits.