Tea sandwiches somehow transform basic ingredients into a special, tasty, bite-size treat. Whether you have them for lunch or afternoon tea, they are so simple to make and so extraordinarily delectable. The key is to use thinly-sliced bread with crusts removed. We paired cucumber with cream cheese, avocado, and mint, and egg salad with dill and stoneground mustard. You can enjoy them knowing that each serving of four mini-sandwiches costs under $1.