Whimsey
Carder Steuben Club
Carder Steuben Club
Whimsies were generally non-production articles made by gaffers for personal use or for gifts.  They were frequently made from end of day or leftover glass.  They were usually imaginative items, such as glass pens or canes or sock darners. 

There is a specific club for collectors and enthusiasts of whimsies.  They have an excellent web site. 
Glass Whimsey Club
The most prevalent Steuben Glass Whimsey is the sock darner.
Blue Aurene
Gold Aurene
Cocktail Glass with Cherry
Tyrian Decoration on Rouge Flambe
                Darner
Rouge Fambe Cane
Blue Aurene Cigarette Holder
Creamer & Sugar
Only for the lack of a better place am I listing these under whimsey.  These are color rods used for Quality Control at Steuben to make sure the colors were true.