*Toasting nuts and seeds makes them amazingly flavorful, and takes basically no effort (just heat them over medium heat in a dry skillet, stirring constantly, until they brown and smell heavenly). My favorite are toasted pumpkin seeds (I sprinkly a little tamari on after removing them from the skillet) and pine nuts. You can also add spices (cumin, turmeric, cinnamon, whatever). Pumpkin seeds, in particular, are nutritional powerhouses.
*Cashew butter and apricot jam on whole wheat bread
*Smoothies! Dump in everything and the kitchen sink
*This may sound crazy, but I really like greens sandwiches: steam some kale, collards, or swiss chard; pile on a piece of crusty sourdough or whole grain bread, and drizzle with a little olive oil
*Another weird but easy dish is kale salad: steam a mess o' kale, and top with a slice banana and toasted sesame seeds (much, much tastier than it sounds)
*Burritos and wraps of every kind are easy...if you have some bean dip (or just some mashed black beans), you can spread it in a tortilla, add some veggies, and roll it up
*Cold cereals, with or without rice/soy/almond milk
*Cold pasta or quinoa salad (takes some prep in advance, but then you can store in the fridge for days)
*Oskri bars--just discovered these at Whole Foods; they're basically just sesame seeds and molasses, and some have fruit...high in calcium and just a little bit sweet
*Just Fruit/Just Veggie snacks: you can get these at Whole Foods or another health food store...they're dehydrated fruit and veggie crunchies; I especially like the peas and the cherries