The context is an image properties dialog in a CMS backend. Here the backend user has the option to let the website visitor see (a full-size version of the) image in a lightbox when clicking it.
- What would be a suitable icon for such an backend option, when the restrictions are a grayscale pictogram style icon of maximum 32 x 32 pixels?
In my mockup the icon looks like this:
Update: To be more specific concerning style, my other icons are inspired by the look of these: http://www.iconsweets2.com/