It is possible to guess the manufacturer of a package (cakebox) of discs by looking at specific characteristics. Manufacturers like Taiyo Yuden or CMC Magnetics have special cakebox designs, making their products easily identifiable.
And as we Germans say, a picture tells more than a thousand words. This is why I'm starting a thread with different cakeboxes forms and styles from all over the world.
WARNING: A CERTAIN CAKEBOX STYLE WILL ONLY TELL YOU ABOUT THE MANUFACTURER OF THE CAKEBOX. THIS CAN BE, BUT DOES NOT HAVE TO BE THE MANUFACTURER OF THE MEDIA. ALSO, A CAKEBOX STYLE IS NOT TIED TO CERTAIN MEDIA CODES OR VICE VERSA. SEVERAL CAKEBOX STYLES FROM DIFFERENT MANUFACTURERS HAVE ALREADY BEEN COPIED OR CLONED BY OTHER MANUFACTURERS. NO WARRANTY IS GIVEN FOR THE COMPLETENESS OR CORRECTNESS OF THE PHOTOS.
Maxell used refurbs of old style Prodisc cakeboxes with Ritek media in them in the 8x days in Europe.
MCC 004 (Verbatim 16x DVD+R) can come in CMC, Prodisc or Moser Baer-style cakeboxes.
And oh yes, some cakeboxes in this post have been tampered with.
Let's start with CMC: 
CMC 10 cakebox

CMC "new style" 25 cakebox, new style 25s don't have tall lip
(Yes, I filled some new discs into this after the cakebox went empty.)
CMC "old style" 25 cakebox with tall lip

CMC 50 cakebox with tall lip
You can clearly see that the CMC cakeboxes all have serif "LOCK/OPEN" font. This is not true with Verbatim Pearl White CMC media, but this is a rare exception.
Also, all CMC cakeboxes have a rectangle and a recycling triangle on the other side.
Old style CMC 25 cakeboxes also had a tall lip. All 50 cakeboxes have a tall lip, and no 10 cakeboxes have a tall lip. CMC cakeboxes never have a round lip!
Now, let's go on to Prodisc:
Prodisc "new style" 25 cakebox, broken
Prodisc "old style" 25 cakebox, refurb sold by Maxell with Ritek media
Prodisc "new style" 50 cakebox
Prodisc is another Taiwanese manufacturer making discs for Verbatim/MCC. Pretty normal cakebox, the "LOCK/OPEN" font is sans serif but bold.
A rare encounter, TDK Luxembourg: 
TDK "Made in Luxembourg" 25 cakebox
It looks normal, but it has a significantly smaller "LOCK/OPEN" font than other manufacturers. The bottom has a five-letter code (like BWAEB) over the recycling triangle.
The lip is round.
TDK used to have a factory in Luxembourg, where TDK/Imation 8x DVD-R, TDK 4x DVD-RW, TDK 800 MB CD-R and TDK ScratchProof have been made in the last months. Now it seems that the factory is either closed or has changed owners, it has been making media for Sony the last months.
I have also seen 10 pcs TDK Luxembourg cakeboxes.
(In)consistency master, Ritek: 
Ritek 50 cakebox
Only had this photo at the moment, sorry. Ritek cakes often have gray bottom. I don't really know more about them as I don't have one here to play with...
Exotic Style, Taiyo Yuden:
Taiyo Yuden classic style 25 cakebox
Taiyo Yuden new style 25 cakebox
Taiyo Yuden classic 50 cakebox
Taiyo Yuden classic 50 cakebox in shrinkwrap
Taiyo Yuden, old style, 50 cakebox in shrinkwrap
The Taiyo Yuden classic cakebox is special. It is one of the most cloned cakebox styles. Usually the genuine ones are made of >PP< and have a code like FIC1-B on the top. Most Taiyo Yuden clones are made of ABS.
The new style look like normal cakeboxes and have a gray bottom like Ritek and Sony cakeboxes.
The even older TY cakeboxes have a screw cap on top. I haven't used those and have no details on them.
Hope you enjoyed this post!
evilboy
(Of course feel free to answer, comment, correct, or add. Currently I don't have access to Ritek, MBI, Daxon, Sony MIJ, Maxell MIJ, ... cakeboxes to make photos!)