Oh wow, that's impressive, I thought it was just some kind of simple ROM conversion. I don't really know how all that works of course. I have an Analogue Pocket, so that has saving built-in, so perhaps you could find a way to make a larger amount of items, by sacrificing saves.
How did you do this? I was wondering if you could port minicraft+ because it is a great mod. Otherwise, how did you port this, I could attempt to demake minicraft+ myself.