Tamaki
He would rush over to you inspecting you from head to toe. Then he would hug you saying "my princess is clumsy it's so cute".
Kyoya
Depending on how big you tripped he would just say how clumsy you are and smirk. But he would also comfort you if you hurt yourself.
Mori
He would normally catch you or grab you before you could trip. But when you did trip he would hug you and ruffle your hair.
Hikaru
He would laugh at you until you pout then he would help you up. "Oh y/n you're so clumsy" is what he would say.
Kaoru
He would rush up to you worriedly. "Y/n are you okay" he would get a little bit too worried.
Honey
Honey would fall over with you to make you laugh. Then give you his Usa-chan and then the two of you would eat cake.
Harhui
He would help you up.