Mash drained canned chickpeas with avocado, lime juice and fresh cilantro or dill, depending on taste, then salt and eat on sandwiches or as a scoop on top of a green salad.
Canned or plain boiled pintos can be good if you dress them up with Mexican rice, guacamole, lettuce or shredded cabbage, and your favorite salsa on a burrito or tostada.
I second Lou in suggesting split pea soup, and I like simple mixed bean soups flavored with nothing but garlic cloves or onions, salt and pepper and rosemary.
You can thaw frozen edamame and snack on it, or grill tofu to include it with your bean burritos, salad or sandwiches.
I like to make mixed vegetable curries and you can add tofu or your favorite beans to those. Peas and chickpeas I tend to like best in curries. Like peas, potatoes, onions, and broccoli or spinach, or a root vegetable like squash.
I also throw chickpeas into my lunch pasta when I am broke. Literally pasta with marinara or tomato sauce and nutritional yeast, some garlic and or balsamic if you have it, then throw in chickpeas. If I'm really low on cash this could be my lunch three days in a row.
Also lentil soup and white bean soups are good.
A really simple soup is taking two cans of white beans, drain one and set aside, but mash the other into a paste with the liquid. Add a little water and vegetable bouillon and heat with kale, and salt, maybe add an herb you like and some sauteed garlic or onion.