I found the first four books of the Harry Potter series to be quite lighthearted.
But the fifth one—-dead Sirius.
A lighthearted joke
A man was absolutely delighted when he came home and saw that someone had stolen every lamp in the house.
Lighthearted talk about patriotism...
is Star Spangled Banter
I'm gonna start a taxi company and employ only lovable, silly, lighthearted drivers.
I'll call it Goober
A mental health facility offers supervised hobbies for its patients.
They have access to painting, exercise, a small library, cooking, all sorts of stuff.
When they paint, they are often instructed to paint their mood, or something they would like to see or do when they are released. Some paint melancholy things, dark with depressive imagery and muted colors. ...
So apparently it's just a bit of lighthearted fun when people dress up to go and see Harry Potter at the cinema.........
but, when you do the same for Schindler's List, you're some kind of sick weirdo.