M.L.
You can add in carrots, celery, spinach... pretty much anything to fruit juice, tomatoes are good too (technically a fruit) but many juicers don't juice tomatoes very well. Vegetable juice is pretty gross to me, so having one or two veggies in a fruit juice usually makes it taste okay.
One good way to wash veggies, is to spritz them with a vinegar/water solution, then scrub them and rinse under cold water. It removes more pesticides than just water, and about the same amount as those fancy veggie wash sprays.
Some juice/smoothie recipes to try:
http://jointhereboot.com/reboot-program/recipes/