You can pre-order the 'old 3DS' NFC amiibo reader right now – Destructoid
amiibo Super Smash Bros. Series Figure (Pit) (Re-run) for Wii U, New Nintendo 3DS, New Nintendo 3DS LL / XL
Amazon.com: Officially Licensed Nintendo 3DS Amiibo Case – Protective Deluxe Traveler for Storage, Display or Carrying Case/Box – Blue : Everything Else
amiibo(アミーボ) | 任天堂
Amiibo - Nintendo 3DS Guide - IGN
Use amiibo with Nintendo 3DS & Nintendo 2DS with the NFC Reader/Writer Accessory - YouTube
How to Use Amiibo on Old 3DS - YouTube
amiibo Super Mario Odyssey Series Figure (Peach - Wedding Outfit) (Re-run) for Wii U, New 3DS, New 3DS LL / XL, SW