Chibi Robo

• Power up Chibi-Robo into "Super Chibi Robo"
• Use the Toy Capsule Machine to unlock collectible figures

Community-reported

• Give Kirby a Copy ability based on the character's abilities and a health item

Community-reported

• Receive a random title or avatar item, up to five times a day. Each amiibo can be used once a day.

From NintendoSource

• Unlock a character-based Mystery Mushroom costume

Community-reported

• Receive a Spirit of the character

Community-reported

• Unlock randomly assigned three-minute NES or SNES game scenes. Subsequent scans change the scene.

From NintendoSource