My nVidia-branded plastic "sculpture" with a laser-etched 3D Eiffel tower and an actual pre-production GeForce 3 GPU embedded.
In the early 2000s I worked for a small game studio and got the attention from Nvidia for how we used their graphics cards. They wanted us to adapt our game to their new secret GeForce 3 project which was the first programmable GPU (as in shaders).
It was a crazy time with a lot of stories to tell. We got invited to the press conference for the new card, which was held in the Eiffel tower. Yeah, they actually rented the Eiffel tower.
As a thank-you for the work we'd done their developer relations representative had these made for all of the external game developers involved.