All Consoles/Handhelds and Electronics are cleaned inside to have a long lasting life. The SNES come all with a fitting Controller.
All my Consoles work! The white SNES
just has no power light when you turn it on. But it works. No Extras.
[The Consoles are PAL!]
PC Mouses: I dont know if they are working so there's no guarantee. Just for decoration.