Disclaimer: All characters belong to Rick Riordan. I am just borrowing. Pics and gif s also from google. I will say it again. I am just borrowing.

#1 That hand

Nico, even after being the son of Hades, has always been afraid of the dark. Bianca would always hold his hand in the dark. After her death, whenever he roamed in the underworld he would stretch his hand and make a firm grip, imagining Bianca.

#2 The stick of life

When Frank was small, he had once entered the attic quietly and opened the forbidden chest which contained his stick of life. He didn't knew what use it was off and was about to throw it in the fireplace when his mom saw him. That day, Frank Zhang was saved by his mom from committing sucide.

#3 That sweet voice

When Reyna used to be free, she would come by the river and sing the song that Circe had taught them, remembering her past and Hylla, often shedding tears. Little did she knew that all the campers would follow her and hide behind the bushes to listen her sing.

#4 I love you

Whenever Leo was worried he would start tapping the morse code for "I love you" and would feel embarrassed before realising nobody understood it. But just then he would hear Festus using the morse code for "I love yo too." and smile stupidly.

#5 That stapler

One day, Percy and Annabeth's kid tried to eat a stapler and got hurt. They laughed when they saw that and said, " Jason would we proud.." before they realise Jason is dead and soon their eyes filled with tears.