Size/Quantity:
* Tiny: Very small, diminutive.
* Wee: Small, especially used for children.
* Mini: Short for miniature, often used for objects.
* Teeny: Very small, often used for things like clothes or jewelry.
* Itsy-bitsy: Extremely small, almost insignificant.
* Small fry: Refers to someone unimportant or of low status.
* Diddly-squat: A small amount, almost nothing.
* Crumb: A very small piece, often used figuratively for a small amount of something.
Age/Size:
* Little one: Used for a young child, often with affection.
* Kiddo: A casual term for a child.
* Sprout: A small child, suggesting they are growing rapidly.
* Tiny tot: A very young child.
* Shorty: Someone of short stature, sometimes used as a term of endearment.
Other:
* Bitty: Small, often used for objects.
* Petite: Small and dainty, often used for women.
* Compact: Small and efficient, often used for objects.
* Litte ol': A friendly term for someone or something small, often used with affection.
The best slang term to use depends on the context and the tone you're aiming for.
Important Note: Some of these terms can be considered offensive or derogatory if used in a certain way. Be mindful of the context and your audience when using slang.