As with anything that has a fan following, there tend to be collectables related to such a thing that the real fans want to own. I am no exception. The books relating too and copies of the game itself I own have complete listings on the Final Fantasy IV sources page. However below is a listing of all the official collectables I have acquired.

MODELS, STATUES, LIMITED EDITIONS, ETC:

• Final Fantasy IV Phone Card and Bomb Ring Replica in Wooden Box

• Final Fantasy Chrome Figure "Cecil" #0186 / 3000

• Final Fantasy Chrome Figure "Rosa" #0857 / 3000

• Final Fantasy IV Limited Edition GBA Micro

STANDEES, DEMOS, RETAIL ADVERTISING, ETC:

• Final Fantasy IV Advance Standee Box 18" x 14"

GAME COPIES:

• Final Fantasy IV SFC Complete in box with instructions (Japanese)

• Final Fantasy IV EasyType SFC Complete in box with inst. (Japanese)

• Final Fantasy II SNES Complete in box with inst. (USA English)

• Final Fantasy Chronicles PSx

• Final Fantasy IV WSC Complete in box with inst. (Japanese)

• Final Fantasy IV Advance GBA Complete in box with inst. (English)

• Final Fantasy IV Advance GBA Complete in box with inst. (Japanese)

MUSIC:

• Final Fantasy IV "Minimum Album" (Original NTT Pressing WITH Sticker)

• Final Fantasy IV Piano Collections

• Final Fantasy IV OST

ART PRINTS, TRADING ARTS, DOUJINSHI:

• Official NTT Print of "The Lunar Whale" by Yoshitaka Amano

BOOKS, STRATEGY GUIDES, PUBLICATIONS, ETC:

• Final Fantasy IV Settei Shiryou Hen (3 copies)

• Final Fantasy IV Kiso Chishiki Hen (2 copies)

• Final Fantasy IV Sento Kaiseki Hen (2 copies)

• Final Fantasy IV Tetsutei Koryaku Hen (2 copies)

• Final Fantasy II: The First Epic Adventure for the SNES (N.P. v30 1991)

• SquareSoft Guide Book Series: Final Fantasy IV (Complete with stickers)

• Final Fantasy Collection Genso Seika no Koryaku Hon

• The Brady Games Official Final Fantasy Chronicles Strategy Guide

• Final Fantasy Complete Works I - VI Vol. 1 Part 1 Revised Edition

• Final Fantasy Complete Works I - VI Vol. 1 Part 2 Revised Edition

• Final Fantasy Complete Works I - VI Vol. 2 Revised Edition (w/PSx Disc)

• "The Sky - The Art of Final Fantasy" this is the definitive Final Fantasy Art collection by Yoshitaka Amano. Book two in the box set contains nearly all of the concept art for Final Fantasy IV.

Now all I need is the Holy Grail: The Cold Cast of Cecil on Mt. Ordeals!

I have also been informed by a friend that Trading Cards also exist.