Really the airflow thing is the most important for just most non catastrophicly unfixable problems.

Give a foot to its left and right of nothing, and nothing over it, if possible... don't smoke in the same room with it, possibly plug it into a power strip/surge protector if the electrical in your living space is kind of shoddy, or your local grid is fucky wucky.

Do not immerse in water, do not have your dog pee on it, do not drop test it, etc, lol.

All that goes for the power brick as well, it also needs space to not overheat and ... well, brick itself.

If your room temp is getting higher than maybe... 80, 85, 90 degrees F? Consider either getting an AC unit ... or pointing fans at the 360 or something?

Also um:

https://battleverse.io/is-xbox-live-still-a-thing

I throw my hands up at understanding precisely what that all means.

... maybe just... don't give it internet access, at all, at this point?

Also, I am required by MSFT to inform you that, though it is possible to successfully hard mod your 360 into being able to run, and access unapproved software, this will void your warranty that is almost certainly no longer in effect, and may also lead to irreprable hardware damage and/or the revocation of your Xbox Live Xbox Games Pass account.

=D

(Yeah my actual job involved reorganizing and fixing up the spider's web of... the entire branching set of all possible questions and tech support script prompts that all the call center tech support people would run down.

There were... I think over 1000 different possible nodes you could land on, god knows how many possible distinct, branched paths.

The super fun part was when my boss and I would find ... infinite recursive loops within certain branching question/script paths, because we would be having people pick from an insufficient set of answers to a question ... because we didn't even realize some scenarios were even possible... which we did not realize because our contacts at the hardware design department told us they were impossible... even though ... in actuality, they were indeed possible, and common, and hardware did not want to admit the extent to which the fundamental design was fucked.

So, if during the 360 era, anyone ever called into MSFT support and got stuck in an infinite loop of repeating questions: I am sorry, part of that is technically my fault, but in my defense, I was there from '11 to part of '12, I didn't set up this broken system, it had existed for at least 2 years prior, and I tried my damndest to fix it in the 9 months that was me and my boss's job.)