I'm building an interface for users to create a web page. The user clicks a button to choose an icon from an array of icons to be used on their page.
I have always been stumped as to which icon is best suited for use on the "choose icon" button, which itself is simply an icon on a grey background.
My closest icon approximations have always either been an (eye) or the letter (i) in icon form.
Is there a standard icon for "icon"?