“cute as a kitten,” comparing the way someone looks to the way a kitten looks
•“as busy as a bee” comparing someone’s level of energy to a fast-flying bee
•"as snug as a bug in a rug" comparing someone who is very cozy to how comfortable a bug can be in a rug
•"as happy as a clam" comparing someone's happiness to the contentment of a clam
•"Life is like a box of chocolates, you never know what you're going to get." comparing the uncertainty of life to the uncertainty of choosing a chocolate from a box
•"as agile as a monkey" implying someone can move as well as a monkey does
•"as black as coal" comparing the color of something dark to the very-dark coal color
•"as blind as a bat"