While playing with icon design last week I came up with the idea of horizontally flipping that character that’s used to indicate end-of-paragraph in word processing software. Turning it into a ‘P’. And it’s got elements of ‘I’ and ‘T’ as well, and carries associations with print and page layout, and writing.
The OSX ‘Character Viewer’ told me it is called a Pilcrow. I like that name. The Wikipedia ‘pilcrow’ entry provides some historical information.