Just before Jumba and Stitch level the Pelekai home, this scene features the Mulan and Duke posters in Nani's room.
The Mulan poster is a nod to the Lilo & Stitch crew who had worked on the earlier Disney feature. That includes Lilo & Stitch's Co-Director Chris Sanders (also Stitch's voice) who was a writer for Disney's Mulan.
The other poster is a tribute to Hawaii's Duke Kahanamoku, who won five Olympic swimming medals and spread the popularity of surfing.
Image © Walt Disney Animation