Here's a Doraemon encyclopedia listing every gadget that appeared

Automatic Buying Machine, Doraemon Wiki

Category:Gadgets, Doraemon Wiki

The Illustrated Encyclopedia of Real Things, Doraemon Wiki

Gadgets of Doraemon - Doraemon Türkiye

Doraemon - Wikipedia

Doraemon the Movie: Nobita and the Steel Troops (movie 1-07) - Anime News Network

Doraemon: Most Up-to-Date Encyclopedia, News & Reviews

Doraemon bilingual edition and interior of gadget encyclopedia : r/MangaCollectors

Doraemon and His Imaginative Gadgets