Alchemy - electroforming on plastic, but really it's alchemy ;-)

[Alibert]

In electronics stores you can also buy spray cans with conductive nickel coating. These are normally used to spray inside plastic enclosures to make them conductive (creating a Faraday cage) in order to minimize electromagnetic emissions. They are designed to adhere to plastics very well.

[curious aardvark]

In electronics stores you can also buy spray cans with conductive nickel coating. These are normally used to spray inside plastic enclosures to make them conductive (creating a Faraday cage) in order to minimize electromagnetic emissions. They are designed to adhere to plastics very well.

yep very very expensive, and think of the paint that gets wasted when you sparay paint something small.
A small paint brush will cover any small item, quicker, cleaner and you won't miss any nooks and crannies or need a spraying box.