global search field gets bigger
The global site search field on some sites expand on entry. This keeps the search field small until needed, and visually unobtrusive, and makes it more welcoming for typing search criteria when needed.
Also, the expanded search field might occlude alternative functions being disregarded by the user's choice to use global search -- see ux.stackexchange for example.
Adminjannel (Admin, Patternry) commented
Thanks, I'd see this as a mini pattern, linked to a search pattern.