Theme Napkin

napkin
A baby's diaper
a small piece of table linen that is used to wipe the mouth and to cover the lap in order to protect clothing
diaper: garment consisting of a folded cloth drawn up between the legs and fastened at the waist; worn by infants to catch excrement
A square piece of cloth or paper used at a meal to wipe the fingers or lips and to protect garments, or to serve food on
A napkin, or face towel (also in Canada, the United Kingdom, Australia and South Africa: serviette) is a rectangle of cloth or tissue paper used at the table for wiping the mouth while eating. It is usually small and folded.

theme
The subject of a talk, a piece of writing, a person's thoughts, or an exhibition; a topic
The first major constituent of a clause, indicating the subject-matter, typically being the subject but optionally other constituents, as in “poor he is not.”
An idea that recurs in or pervades a work of art or literature
provide with a particular theme or motive; "the restaurant often themes its menus"
subject: the subject matter of a conversation or discussion; "he didn't want to discuss that subject"; "it was a very sensitive topic"; "his letters were always on the theme of love"
a unifying idea that is a recurrent element in literary or artistic work; "it was the usual `boy gets girl' theme"