Hackady, why must you tempt me with a cool and exciting project? I feel like a mini, maybe even wearable printer based on VLM could make some real sense. One of the comments said something about an "Omni-tool".

It sounds like vaguely like a 3D printer and cyberdeck all-in-one. I can see that. A 3d printer, Compute Module 4 and #Tetent Tiny [gd0040] with a screen. To print anything actually useful (eg a screwdriver) , a length of 130cm or so would probably be required. Reading this hackaday article, it seems that dual material would be beneficial for dissolvable supports. Some mini activated carbon filter will also need to make an appearance.

I['m thinking of having the cartridges on the inside part of the arm and the build area on the outer side.

Other than the big questions about the Suspense I still have yet to answer, another 2 questions arise for this forearm wearable.

1. How to make the cartridges gravity independent.
2. Light source?

For the second question, my immediate choice would be this one:

Cheapest one on Aliexpress with a good power output for faster printing. I just worry about the overall thickness. Printing fast is usually of higher importance than ergonomics. Maybe a printer that fits inside a fillament spool is a more realistic target. It doesn't have the same apeal though.