There are several creative hands on and off the blockchain, you can start a contest that host different people of several creativities for a week (e.g art, poetry, music and so on).
Whilst, you get a judge or yourself to pick first to three winners from each categories (you can decide to stick with a category).

Let me cite some examples below;
Art - they can create something iconic to showcase Steem to the public.
Poetry - a creativity piece of literature
Music - create a lovely tune and upload to dsound.

Nb: you will have to create a tag for these. Most preferably your tags.
You are welcome