Answer: twiddles

AnswerCrossword Clue
TWIDDLESPlays with one's thumbs, in a way
TWIDDLESPlays with one's fingers
twiddlesTWIDDLE, to play idly with something
twiddlesTwist, move, or fiddle with (something), typically in a purposeless or nervous way
twiddlesTurn or move in a twirling way