If you've made a commitment to make more of your workday lunches at home, you'll want to experiment with a variety of different options. Sandwiches are often effective for lunch during the workday, but substituting a bun for the bread can make the lunch more appealing and more filling. Visit a local bakery to see what fresh buns are available. You'll likely find a number of choices, including Kaiser buns. Known for their domed shape, crusty exterior, and soft interior, Kaiser buns are tasty when they're plain.