Every time legumes like beans, Lentils and peanuts are combined with wheat, rice, or corn a complete protein is created and there are many good recipes on the internet that incorporate these into a tasty dish, where you might not otherwise like them by themselves. You might also like
protein shakes from whey or soy, plus there are various
protein bars that do not use animal products. Be sure to read the ingredients before buying them.
Seitan is another popular protein source of vegetarians.