I would love to be able to just put in objects, and then slice objects. The closest solution to this is multiple division extension found in Multi-Boolean Extension. I also heard that there was a knife extension somewhere, but I don't see it, or maybe I misread.

The eraser can be used as a knife of sorts by enabling that kind of erasing in its control bar (the options are to erase parts of objects or whole objects) and using a very thin eraser width