adjective
teeny
TEE-nee/ˈtiːni/
Very small.
The teeny strawberry lies beside a normal-sized one.

Etymology
Teeny is an altered form of tiny, preserving its meaning of extreme smallness. Tiny itself goes back to an older word meaning “very small,” whose origin is uncertain.
In context
But what I'm doing is I'm taking the teeny, tiniest piece of celery that I can find 'cause we're doing this on a mini latke and I'm just gonna dice it tiny