Here's a Doraemon encyclopedia listing every gadget that appeared

Category:Gadgets, Doraemon Wiki

Which gadget will you ask Doraemon? How will you use it? - Quora

Doraemon: Nobita's Space Heroes - Wikipedia

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

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

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

Doraemon Nobita S Diary On The Creation Of The World: Most Up-to-Date Encyclopedia, News

Gadgets of Doraemon - Doraemon Türkiye

Doraemon: Nobita's Chronicle of the Moon Exploration - Wikipedia

Gadgets of Doraemon - Doraemon Türkiye

Doraemon's Surprised All Encyclopedia, Doraemon Wiki

Gadgets of Doraemon - Doraemon Türkiye

Stand By Me Doraemon and 80 Years of Gadgets - This Week in Anime - Anime News Network

Doraemon Encyclopedia, Doraemon Wiki