Most of the time I keep it plain, little Italian seasoning and or some season all, and I usually drink juice with it for the instant sugar.
Sometimes I'll cook up a mix of carrots, celery, little onion, peppers, cherry tomatoes and have that on top. Sometimes it's veggies ( rinsed,) out of a can if feeling lazy.
What's your fruit intake like? If you're open to it, try adding banana smoothies, ( or eat'em regular.) I go through at least two banana smoothies a day, each one is at least 1.5 to 2.0 liters big with a little strawberry and kiwi mixed in. It's about 30 bananas a day.