How do you feel today? Google gives you the chance to search not only if you feel lucky but also Hungry, Doodley, Playful, Trendy…
Just try www.google.com and go hover the “secondary” action button.
That’s a little-big example of how a minimal interface take advantage of a very simple resource to engage and create a funny and enjoyable experience when interacting with the search box.
Take a while to discover what’s behind those buttons 😉