Junk also tend to accumulate in rivers and lakes. Once it’s in there it’s out of sight, out of mind - and even if you know it’s there it is often difficult to remove.
When it finally gets cleaned up by bringing in the magnet or a barge to dredge it up or whatever, you’re seeing years if not decades of stuff that’s getting pulled out all at once.
There’s a number that can be played with just a mouse. Though looks like that’s not an option.