Ideas: Music player with several songs (Maybe even with a character that dances whenever you turn on the music), bush holds a secret, "the pit" page where you can endlesssly scroll down.
Stimulative page.

I want to at least make the home page somewhat similar to how the Lek och Lär games are like.

The placeholder could become the website mascot or character that presents the website... or, um, Idunno, a character exclusive for this site?
It may seem strange as usually it's for company stuff but... why not?

Also they're nonbinary.
I was gonna give them only they/them pronouns but because swedish sucks ass and doesn't have a 'them' equivilant of a singular they pronoun then they'll use any pronouns instead.

What will their personality be like? I'm not sure, maybe cheeky?

"Friends with Edgar" with no elaboration. This is referring to/referencing Edgar from Electric Dreams.

Their primary colors are red and white.

Maybe they could be like a guide that could be accessed in the '[?] (Help)' menu, where there are Q&A stuff plus you can ask the character themselves about stuff.

"What are you?"

"Oh, me? Well some people say I look like a cat because of my head shape,
so I might be that, or not, who knows. Shrug

Using the fake power off button on the site will take the user back to the Neocities' website browse pack, though there's a 1 in 100 chance that you'll go somewhere else instead.

You can make Little turn their head around by telling them to look behind them, just for the sake of making sense how their head is like. Also yes that's their name now because I think it sounds neat, and can also be used for puns like 'little by little'.

The page that Nitel (I have decided that they will have this name instead now ok) is on could have a secret color option, where it lets you change Nitel's color from red to whatever other color you want.