A small, dark blue "balloon flower" for Iori.
The autumn just came in, with red and yellow leaves on the trees and peaceful afternoons; Tamaki is taking a nap on the sofa instead of studying and usually Iori would simply wake him up and try to make him study - he's also ready to give him a small break at some point with Tamaki's beloved pudding, too used to do homework with him to not know how the other is easy to convince with the right motivation. Now he looks at him, snoring while hugging a pillow and sighs: maybe it's autumn already but it doesn't mean it's warm enough. He takes a blanket and puts him over Tamaki, covering him to the shoulder; then he sits down again and takes a sip of the hot cocoa Mitsuki made for him before and goes back to write some notes down. When Tamaki will get up, it will be easier for him to study. And as he will wait for him to finish his homework, ready to help him if necessary, he'll help the others too, without being noticed as usual.
Balloon flowers are for faithful lightness and for undying love.