This is a list made thanks to input from all the great photographers in the Facebook group called Macro Photo Junkies. This group includes AWESOME artists like: and others!
These are recommendations, and like the image says, you choose what to put in, specially in cases like for instance:
You have the MP-E 65mm prime macro for Canon cameras , so extension tubes, bellows, diopters, etc, are not really necessary to you. That powerful lens is enough. Or another example, you have the R1-C1 or the MT-24ex, so brackets are not really applicable. About the secondary gear, this also works for other kinds of nature photography, specially if you're going into "the wild".
Feel free to comment and suggest changes that might improve this list!
You do not need to ask permission to use and you do not need to ask a print permission for DA Artist. It would be great to credit me in your artist comment and put a link back to my stock. Please note me or leave a comment under the photo you have used, so that i can take a look and fav it. Finally, be creative and let me know!