ARIA CHECKBOXES: What do you want to be when you grow up?
Standard IMG tag as a toggle:
A Horse
INPUT with type="image" as a toggle:
DIV tag with a background image as a toggle:
A Goat!

The ARIA checkbox controls are keyboard accessible.

Press the Tab key to navigate between the ARIA Checkboxes. 
Press the Spacebar to toggle the state of the selected checkbox.
Mouse users can click a checkbox to toggle the state as usual.