The term "Duckie" is a slang used to describe something or someone that is cute, adorable and endearing. It can also refer to a small rubber ducky toy that people often use as decoration or collectible item.
Usage examples
I bought a cute little rubber duckie for my baby's bath time.
Tom surprised his girlfriend with a stuffed animal duckie for their anniversary.
Sarah's favorite childhood toy was a yellow duckie that quacked when you squeezed it.
The children played a game of duckie, where they had to imitate the movements of ducks.
Grandma baked delicious cookies shaped like duckies for the family picnic.
Mary got a duckie tattoo on her ankle to remind herself to always stay playful and carefree.