Black Dustpan in dreams
A small flat scoop for collected dust — the moment of finally lifting the small mess off the floor.
How black changes the reading
Black colour pulls the symbol toward the not-yet-known — depth, hiddenness, the part of the situation that has not yet come into the light. The dream is rarely warning you; it is showing you that there is more to the picture than the part you have been looking at.
The base reading of Dustpan
A dustpan in a dream is the dream's image of the last small step in a cleanup — the act of actually taking the pile off the floor instead of leaving it neatly heaped. The dream brings the dustpan when you have done the difficult part of dealing with a small ongoing mess and are now at the stage of disposing of the residue. A dustpan filled and emptied is the dream marking the task complete. A dustpan repeatedly scraping at the same line of dust is the dream noting that the residue is sticking and the cleanup is, in practice, not finishing.