eager beaver
busy bee
live wire
sharpie
sharpy

Nothing is safe from the busy bees of fashion.

Here's fruit to feed our busy bee, And flowers for her nose.

You have been a busy bee, Newman was thinking.

Captain: If the autopilot didn't work, he'd be one busy little bee right now.

Taxis came and went like busy bees, bringing passengers, taking them away.

From the other side of the wall came the hum of busy bees.

"But he's been a busy bee this evening," Sarah countered.

But he still got his picture of the beekeeper and his busy little bees.

The skep is often used on signs as an indication of industry ("the busy bee").

He's a busy little bee, on acounta his whole shoulder is all bandaged up!