What is a micro-memory palace

[Josh (Josh Cohen)]

It sounds like it means a small memory palace. You can use small objects as memory palaces/journeys like Boris mentioned here:

@Boris

I also have locations indoors where every single spot might be pretty small (like a bar of soap).

I do see, that I can fit in more information in a bigger location, BUT the limit of the size of the smaller ones does not seem to be to bas for me. I still can fit the names of all German presidents on the soap bar.