If you piss off Talarist enough, he'll get ahold of the poem in one of the epilogues and use it to insult Elodie... only for her to walk away married to his little brother. Considering that he's willing to kill a little boy to secure his place in the Novan nobility, it's even better that he loses everything that he was trying to gain in marrying Elodie by throwing a tantrum.
At the ball, if Elodie is engaged to Talarist and an oblivious Banion tries to trick her into being obliged to marry him, she can shut him down hilariously.
"I'm the princess and I want my jewelry."
On a certain week, Elodie may receive a decorative pillow from Lillah. If Arisse is dead (by Elodie's doing) and it's her successor Kiran sending it, she descends into paranoia.
Does he know? Is this cushion meant to send some sort of message? Or is it somehow trapped? Is it a poisoned pillow?
In the 'marrying a commoner' epilogue it's noted that Elodie often snuck out of the palace to visit "a certain bakery". Evrard's father is so shocked when he learns the Queen has been frequenting his bakery that he nearly collapses, but Evrard never responds to any of this with anything other than a cheeky grin and a croissant for Elodie.
There are a couple of funny moments with Evrard, if you meet him and reach the requirements to trigger more scenes with him. In the last scene with him, he brings cookies to Elodie, saying he heard she needed cheering up. When she insists she's fine, he dumps the cookies on her anyway, telling her to give them to his sister, Alice. Elodie's reaction sells the whole scene.
The assassination of the twelve-year-old Duke of Elath is not particularly funny, but one of the options for his replacement is, quote, "A random commoner!"
Briony's reaction to being held hostage:
What do you want now, Elodie? This has been the worst vacation ever!