Vape pens, pregnancy tests, office phones, an Ikea lamp - I dunno if this new OP scenario is real, but even if this particular instance was faked, the scenario it describes could most definitely be done.

One of the funniest methods was to mod Doom Eternal and play the OG Doom inside of Doom. You know, so now you can play more Doom while you are playing Doom, for the sake of playing Doom. It's Doom-ception, all the way down baby! :-P