As light as a feather.
As dead as a doornail.
As busy as a bee.
As quiet as a mouse.
As happy as a clam.
Sly like a fox.
You're as sweet as sugar.
here's a famous quote that is also an analogy:
"Life is like a box of chocolates, you never know what you are going to get."
Explanation:
An analogy is a like or as statement used to make some sort of explanatory point.
