This certain item would be based off the Game Boy (from 1989). When activated, a GUI pops up showing a menu where you can play 3 black and white 2D games based on real Game Boy games. These games would be:
Super Block Bros. (Super Mario Bros. ripoff)
Torqueman (Megaman ripoff)
Tetrick (Tetris ripoff)
If making an item version of this impossible, make it a brick laying down.
Also, for people who are willing to model this and don't know what the Game Boy looks like. It is like this:

oh and, when activated, the model should change to a model that looks like its turned on if its possible