Pieces of lost media you want to be found but won’t happen

My Hello Kitty notebook from my tween years. It would be such a blast from the past to see what I was writing, drawing, etc. But my parent long since threw it away, so it ain't ever being found.

I don't see the other thread, so I'll put it here.

The Siscalypse flash game they used to have on the Yahoo! MobaGe service, based on a fictional fighting game from Oreimo.
Oreimo's reputation and lack of popularity nowadays aside, you needed a Yahoo! MobaGe ID to be able to play the game in the first place, and it was online.
There's a bit of gameplay footage of it on niconico and it's not even a good game, it's an extremely barebones fighter that's only significant because it was an Oreimo tie-in.

There's a LMW article for these lost Yahoo! MobaGe games, since there's more than one that are now unplayable. Honestly I doubt any of the delisted games will resurface, purely because you needed to be logged in.

Around 2001, Warner Bros. had a series of internet flash shorts called Thomas Timberwolf. It was the last project by iconic Loony Tunes director Chuck Jones. Thare where six shorts that where completed but never released due to Chuck's passing in 2002. One of the shorts was a two parter whare Tomas complaines about the show's low budget. Considering the discontinuation of flash in 2020, these six shorts are probably long gone.

I've been having a growing curiosity about the lost works of artist John Duncan. It's a bit challenging to put pins in his entire library because there's no organized list on his website, Wikipedia and IMDb aren't super resourceful, and both Letterboxd and TMDB have his work cited as at least two different people.

From what I understand, he has at the very least, two films that are presumed to be permanently lost. I believe part of the art piece included destroying the film reel for one and another has become known as "the secret film". If I'm not misremembering, this is the one where the audience made a sworn vow of silence to never discuss what happens in it and John himself will likely also take this secret with him to his grave unless he has a "tell all" moment before he kicks it.

Rion Chan. Since many people don’t look into Rion chan a lot and the only clips of it are like no audio clips

Yeah, fanfics are a good one. I mentioned this before, but I remember reading a couple fnaf fanfics that always stuck with me during the early years of the fandom. One was about chica causing the bite of 87. One line I recall from it being "I guess that bird must have miscalculated". It was my favorite depiction of the event because of how realistic it felt compared to other bite of 87 stories, detailing the birthday party up to the moment where the bite happened. The other being a story from the perspective of a child, unaware the "weird dancing" springbonnie was a poor employer getting springlocked. This also stuck with me a lot too, since it details an event from the games in a manner that the games don't really show. I miss both of these fanfics dearly, but finding them is really difficult in the sea of fnaf fanfics that exist now and I am afraid they may no longer exist.

That's usually why I keep trying to get screenshots of whatever I can find, like the Quantum Leap fansite Al's Place to help make sure nothing falls through the cracks for good. It's a shame I didn't get to do that with The Bloody Board, a Buffy the Vamprie Slayer forum, before it got hijacked and the admin nuked the whole thing.