These shorts were included as extras on W's myriad DVD releases. They work off of a very simple concept: Akiko comes up with a wacky idea, or stumbles into a silly situation, and Shoutarou proceeds to daydream, "What if..."
The natural chemistry between Kiriyama Renn, Suda Masaki, Yamamoto Hikaru, and Kinomoto Minehiro is unbelievable and it shines here, just as always. The comedy starts subtle and careens into outlandish almost in slow-motion before your eyes. Kiriyama Renn isn't a national treasure; he's a wonder of the world.
Because the plot points that are mentioned in each delusion don't always line up with the Dopant suits that appear, I honestly recommend viewing these post-series for the sake of ease. If you absolutely insist on risking it, just don't watch number 11. It contains a catastrophic spoiler for the endgame. You've been warned. Returning to the Dopants, it's worth mentioning that since these are entirely nonsensical, it's perfectly fine that most of what they do doesn't line up with reality, as presented in the series.
If you can find these, absolutely watch them, even if they are mostly fluff. There is one nice thing conveyed that's worth throwing out there:
We can all be Hidari Shoutarou, if we truly want to.
12 shorts, ranging from 3-5 minutes, apiece.
4 Chances to Reuse Kegareshia's Hammer (Before Giving It to Luckyuro) out of 5