General synonyms:
* Imaginative
* Inventive
* Original
* Innovative
* Artistic
* Ingenious
* Resourceful
* Visionary
* Inspired
* Gifted
* Talented
More specific synonyms:
* For ideas: Conceptual, groundbreaking, novel, fresh, groundbreaking, novel, fresh
* For writing: Eloquent, expressive, evocative, poetic, lyrical
* For design: Aesthetic, stylish, elegant, functional, visually appealing
* For problem-solving: Strategic, strategic, resourceful, innovative, insightful
The best synonym to use will depend on the specific context and the nuance you want to convey.