Valve is closely monitoring fan creativity.
Recently NdorfN shared how his son's birthday was celebrated and posted a photo of the cake:
"My wife, who doesn't understand the game at all, had her brother 3D print a 'butterfly' and a karambit, bought smoke bombs, and baked this cake."
The cake features the Counter-Strike Global Offensive logo, and a Valve representative reacted to it (jokingly):
"This may be a trademark infringement - depends on the taste. I need you to cut off a piece with the logo and send it to me for confirmation"