Portal 2 is probably my favourite game ever. These bookends work great for books or game/movie cases.

Print the 2 parts of the figure in black.

Print one portal in orange and then one portal in blue.

Print the stands in white.

The stand and figure can be done in a lower quality since there is no detail however the portals look best at a very fine quality due to the rippling of them.

To assemble, line up the portal with the stand and then push fit one half of the figure into the gap. They should clip together but you may want to put a spot of glue on also.

I came across this model several years ago, amended it slightly but the original was deleted a long time ago. This was the best one though so unable to credit the original creator.