These could be like the starting of a weird Hetalia RP or Hetalia short story or something, I give permission to everyone but this is just some odd thoughts I got.

A party is thrown at Italy's house and eventually everyone falls asleep (mostly in random places). The door opens and a team of like, ten burglars goes in as quietly as they can, thinking that there is only one, little Italian in the big, God damn rich house. The turn on the lights and the intruders nearly get shot by Germany, Switzerland, and America. The burglars run for the hills when they see Russia glaring at them to leave.

America or France finding England's old pirate costume and blackmail him to wear it at a party or meeting. England keeps accidentally speaking like a pirate and getting frustrated.

America and Canada playing professional hockey together, and Canada getting all competitive on the other team, while America is just like "Daaaaaaaaaamn, they just released hockey Mattie!". After some seemingly unfair calls from the other team, America and Canada GETTING INTO THE BESY FUCKING HOCKEY FIGHT OF THE YEAR!!!!!!! ((Sorry, I am imagining them fighting like bosses))

Spain pouting around the house while Romano keeps on desperately trying to make him feel better, with tomatoes, pizza, and a failed attempt on churros.

France and Poland going to each female countries house to help them with their problems.

Poland always letting you into his house if you're crying or feeling bad and need comforting, no matter who you are. (Even Russia)

Belarus not giving a fuck about Russia anymore and she becomes a self defence teacher for kids, then eventually completely leaves the house and goes traveling with (insert person you ship Belarus with or someone you think she'd be friends with here) around some of their favorite countries and places.

Germany, Italy and Japan becoming temporary preschool teachers. Germany can manage to keep the kids safe while he has three or four on his back and shoulders, and can hold a few others. Italy playing imagine games with the kids, like princesses or doctor.
Japan being the one who calms down any of the troubles and makes sure the kids get naps.

America getting a fake ID and going to drink at bars with Denmark and Prussia.

Japan convincing Germany to try meditation and Germany is so overworked he falls asleep right in the middle of it.

Italy going out with Romano and they flirt with girls, go shopping a bit, talk, movies, and get chased by the cops when Italy drives.