I like cheesecake smoothies with Greek yogurt and cottage cheese. I often use protein powder to boost mine. I recently discovered Garden of Life Vanilla Spiced Chai raw protein and love it. After that it's whatever berries, fruits, and veggies I have on hand. I love baby zucchini in my smoothies and am looking forward to finding them plentiful and cheap

A little nut butter is really good too
ETA - I forgot chia! I always add at least 1 T of seeds. I think all the protein, a little fat (I use reduced fat cottage cheese not fat free, personal choice), and fiber do help me stay full longer.