This depends a great deal on your caloric needs/goals.
IN general, you should have at least some fruits or veggies or fiber of some kind in addition to your whey.
the quantity of additional protein and carbs would require more detail as to your goals/needs.
Here are a few quick sources of protein:
raw/soft/hard boiled eggs
milk (not soy)
Some quick sources of carbs with some fiber:
fruit(blended into whey)
canned pumpkin(blended into whey)
steel cut oats(blended)
Other gtreat foods:
You may also need some fibrous veggies:
spinach, broccoli, cauliflower, green onion, celery, etc…