My first serious prototyping attempt was with the curved fork attached at the side of the chopstick. But a serious fault was the eating difficulty. The food was being interlocked.
Another idea is the chopstick having curved edges. The other chopstick will be normal in its function. Thus, the food can be entangled in the curve and the flat side can act as a grasp.
The areas of my consideration are-
1. The difficulty faced while holding them
2. The material that should be used when it will be mass produced. (environment friendly)
3. The issue of portability
4. The firm grasp for the food.