> So every folder will have an icon to denote which file was the last
> accessed file in that particular folder.

Hi,

IMHO the idea, while novel, and as such, worthwhile -- thanks for
sharing! -- might still have a too anecdotal use case to be really worth
it.

As it stands, you can already have Konqueror order the files by access time
in a directory:

1) Set the folder's view to 'Detailed list';
2) In 'View > Show Details...', select 'Show Access Time' if it isn't
already shown;
3) Click on 'Access Time' in the view's header to order by access time.

And there -- you can have the last accessed files right at the top of
that directory.

Does that answer your need?

With kind regards,

-- S.