Regarding the canonicity of the Drama CDs, I don’t think there is one right answer. Personally, I think most of them cannot fit the main storyline - these are either full-on parodies and/or 4th-wall breaking (the Adventure Mini-Dramas, Michi e no Armour Shinka), side-stories with zero connection to the plot (Tegami -Letter-) and one (Natsu e no Tobira) is in the same continuity as the questionable Movie 3. Therefore, the only Dramas I think could be considered canonical are the two Original Story dramas and the Special Drama from 2015.
However, we need to keep in mind that tri. has pretty much ignored – if not completely gone against – some of the information contained in the Spring 2003 drama CD: stuff like Takaishi Natsuko and Takenouchi Haruhiko being the “Digimon critics”, Hikari helping the new Chosen Children… So, one could argue that its canonicity is in a bit of a limbo right now, at least until tri. ends and we can decide if it fits or not.
To sum up:
Digimon Adventure Character Songs + Mini Drama 1, 2 3 : Not canon (breaks the 4th Wall; Taichi evolves; etc.)
Digimon Adventure 02: Michi e no Armour Shinka: Not canon (full-on parody, armour-evolutions don’t respect the rules of the universe, etc.)
Digimon Adventure 02: Ishida Yamato Tegami –Letter–: Possibly canon, since it has zero impact on any story and it’s only a character study for Yamato
Natsu e no Tobira:Not canon. Happens in the same alternative continuity as Movie 3 (Hurricane Touchdown).
Digimon Adventure: Original Story 2½ Year Break:Safely canon (so far)
Digimon Adventure 02: Original Story Year 2003 –Spring–:Possibly canon but tri. has ignored/overwritten a few elements about what happens post-02
Digmon Adventure Special Drama CD:Possibly canon but now that tri. has introduced the Four Holy Beasts, who knows?
Note: In this context, “not canon” means “doesn’t fit the main continuity of Adventure, 02, and tri.”
“WALL•E is a robot. He’s made out of metal. The metal is rigid. The jointed parts move in their tracks. But these guys, the animators, have still found a way to make it alive.” —Bill Wise, character supervisor
A project I did for my Typography and Layout class. The assignment was to design the alphabet and the numbers 0-9. I chose cartoons as my theme. I used mostly newer shows though there are some classic one thrown in. Note that my 1 and my 4 are swapped, I was more focused on what I was drawing than on where I was drawing ^_^