Display duck cartoon animation (gif) when user clicks on search. You can display simple cartoon duck animation from 5-10 small images (lets say 48 pixels width and height) . For example, duck animation can be played :
a) when user clicks "Enter" key to search or when clicking Search button
b) when user opens browser
c) Search button can have animation (magnifying icon or duck)
Note: you can have one or few simple gif animations.
This animation is simple to design and animate and can be cute and interesting for users.