CGI. It's everywhere in anime nowadays, and some of them are made entirely out of it. Curiously, CGI exists in many forms, such as VRchat-based and MikuMikuDance-based anime. One of such MMD productions is Gdgd Fairies. This anime shows us the mental struggles of three little fairies called PikuPiku, ShiruShiru and KoroKoro (or more accurately, pkpk, shrshr and krkr), friends who gather everyday on a giant tree in the Fairy Forest to play around. In a formulaic but-not-quite manner, almost every episode starts with the fairies getting together for tea time, talking about their day, fun things they did or trivial things they've noticed abouttheir daily lives. This always sparks a small discussion which goes completely off rails once their minds start brainstorming all kinds of solutions to scenarios they've cooked up, such as "Need an unusual hobby with a twist? Why not watch theater buildings instead of the actual movies?", all illustrated humorously.

Afterwards, it's time for the Dubbing Lake, where the girls switch through dimensions on the other side of a lake, TV style. The problem is, since they're merely watching a reflex of the other side, there's no sound. And so they dub over whatever's on the other side of the lake in turns, from a naked Saitama-ish dude farting through the skies to a fat lady dancing in lingerie as buildings collapse around her. This segment is highly notable for one reason: The voice actresses are not specifically in-character; they're ad-libbing through the entirety of each Dubbing Lake. We get to see their raw selves laugh, crack studio in-jokes nobody could hope to understand and say (hilariously) awkward things constantly with no script, with their characters animated accordingly. In the second season, the Dubbing Lake is replaced by a similar segment with even more ad-libbing goodness.
Finally, we have the Room of Mental and Time, a magical room which amplifies the powers of the girls, allowing for infinite possibilities. At the end of every episode, the trio comes up with some kind of seemingly simple game or challenge which always descends into absolute chaos. This includes lauching themselves out of cannons to see who can knock over the most (not real) old men in a straight line (for reference, krkr knocks over 749 old men!), figuring out how to get people to watch your livestreams by showing them some magic, and doing a scavenger hunt while bungee-jumping from space. Again, this is a MMD anime, but if you were to watch this segment alone you'd think it was actually made in something like Garry's Mod due to how creatively crazy it gets with its usage of the 3D models.

Using the format to do things that would be impossible through regular animation and with a really special kind of narrative where we get to see the voice actresses bond with each other well beyond their script, Gdgd Fairies shows us that CGI doesn't exist solely to cut costs (CGI cars and the such in 2D anime are absolutely disgusting by the way) and that in the end, substance reigns over style especially in a medium where not everything can afford to look good.