With their vitamin K, cukes will help keep your bones strong, while protein in the eggs and shrimp energize you until dinner.
Add shrimp to a pot of salted boiling water. Return just to a boil, then transfer shrimp to an ice-water bath. Drain well; slice in half lengthwise.
Soak onion in cold water 10 minutes; drain.
Whisk together lemon juice and zest, capers, and oil. Season with salt and pepper. Toss with shrimp, onion, cucumber, and dill to combine.
Spread 2 tablespoons Neufchatel onto each bread slice; top with sliced egg and shrimp mixture.
You can serve these sandwiches open-faced or top with a second slice of toasted bread.