I recall using Dosshell with a mouse pointer at one point, but I don't remember the circumstances
Back in the day I used a little File Manager/ Editor called Pathminder... Greatest thing I've ever had for DOS, to include the Navigator clones... A bit later, maybe around 2000, someone rewrote Pathminder to handle long file names... But shortly thereafter, probably with XP SP-2, it quit working in NT altogether. Bummed me out.
That was fired with p.bat - I still have a p.cmd in my toybox due to that tool... I will no doubt always associate 'p' with file manager/editor... Though now it fires Bradley Miller's A43...