So I can't promise any order or coherency, I'm giving it my best shot. Here we go.

There are an abundance of Tems. Just so many of them. More than come from the AUs that those in the loop are aware of. They all behave relatively the same regardless. Some a little more aggressive, but mostly the same overall. But. Every now and then, they all just, disappear. There's still evidence they were there. Things they own, their homes, etc, all stays the same, just no Tems. Except for one. One, lone Temmie. It doesn't speak to anyone, or really do anything other than be. Sitting at the entrance of Tem Street, a dead end road, lined with nothing but the houses of Temmies. Watching. Waiting. It's highly unsettling and no one has figured out why it happens or what it means. But if Tem Street goes quiet, everyone avoids it, and do there best not to make eye contact with the lonely Temmie. The whole city breathes a sigh of relief when the Tems return.

Mirrors shouldn't have solid frames, or be completely frameless. The edges must be “incomplete”. If a mirror is cracked or broken it must be completely shattered into as small of pieces as possible, or melted down. The home or building must then be kept as well lit as possible for three days, to chase out any “darkness” that may have seeped in. This is because mirrors are seen as possible gateways into the void. Letting things out of the void is collectively seen as a very bad idea. A complete frame is considered a full doorway and an invitation. Frameless is to place no barrier between yourself and them at all. Broken/cracked means they can slip in without invitation.

It's widely accepted that most human creature/cryptid mythos probably originated with Monsters in some fashion. A few would like to go cryptid hunting on the off chance that maybe some managed to not be locked in the mountain? Perhaps there is still distant family hiding out there somewhere.

Another monster answer to human stories, large groups of people vanishing suddenly without a trace is usually blamed on the void. It slips through to the material world sometimes, and it is always hungry.

It's generally accepted, among humans that bad things occur in threes. For monsters however, 3 is generally a number with positive associations, 9 even more so. These numbers rarely if ever have negative connotations.

Eat something spicy to stimulate magic regeneration. Avoid sugary things, as they tend to give a quick short boost in regen, but then slow it afterwards.

Placing a candle in the right corner of the eastern most window is good luck for expecting parents. Burning it even more so. If you can replace the candle with a new one, and keep it burning for the full duration of the child soul's development, it is said the child will be especially blessed.

Aight, you asked for some Piper, here he is. 18 – S/O Has poor time management skills Oh dear. You two will never be on time to anything, will you? You struggle to keep track of time, or over/underestimate how much time you need for tasks. And Piper really just doesn't care. As long as things get done eventually its fine right? Don't expect him to be any help unless you tell him it's really important to you. If you really stress how much it matters, not to the event or other people, but to you, then he'll put in an effort to help you. With proper motivation, he's actually quite good at keeping things on time. 21 – S/O is a “mom” friend He loves a good mom friend, most of the time. He enjoys being cared for and doted on. And he thinks its cute how you try to keep him on task. Just don't try acting like you can actually command him to do anything. He doesn't take orders well, and balks at people toeing in on his freedom. Reminders, requests, even light nagging is fine. Just don't go making demands. He'll love the other aspects though. Making sure he's fed and dressed, fretting over his feelings. Even being a little protective. He finds it endearing. 34 Happy S/O breaks down in sadness The moment you break down, his first instinct is comfort. Whatever you need. Space, he'll keep a careful, watchful distance. Cuddled, he's very good at that. Soft assurances, handled. He'll let you get it out of your system, and then make sure your basic needs are cared for. Crying is bad for human water levels right? Drink some water please. Maybe eat something, being stressed is bad for human tummies, here's some fresh bread. He's doting, and wants you to be ok. Once that's all settled he'll want to sit down and have an honest talk about it. What happened, why did you react this way, can we do anything about it, and how to help keep this from happening again? He knows people get sad, and that's fine. He won't hold that against you, at all. He has his own issues too, he gets it. But if it's something that can be dealt with and either fixed or at least managed, than he wants a game plan to do so. He hates seeing you hurting, and he'll do anything to help. 41 – S/O borrows clothes Oh that's adorable. You're swimming in his flannel shirts, and its both precious and sexy. He might try to convince you they make suitable dresses. Societally no, but who really cares, right? At the very least, he'll end up leaving a few with you for around the house/sleeping. If, by some chance though, you manage to find his old hoodie, well. You'll suddenly find all your other clothes mysteriously vanished for a few days. And if you ever take your current undergarments off in that time, they'll disappear too. He'll always have you in sight, and usually in hand. It takes you being very clear that you are not putting on a dirty hoodie after you wash to get your things back.