This Tupperware cereal container (I think that's what it is) forms the casing for a fully-functional handheld Nintendo GameCube built by user CKmods of YouTube. You can pop the top off it to get to the guts of the machine, but I wouldn't advise laying the thing down on its back.
That's because the disc drive is completely exposed, leaving the whirling disc to spin outside the back of the case. "Do you ever worry about hitting your hand against that rapidly spinning disk while you play?" asked one YouTube commenter. "i do a lot haha it doesnt hurt it," writes the modder. The device also appears to lack the Z button, and left and right triggers. Still, it's the most useful design involving Tupperware I have ever seen.
[h/t Christopher K.]