Making baby food is the easiest thing in the world. I don't understand why everyone doesn't do it. You buy some pears at the farmers market, peel them & chop them, and saute in their own juices for under 10 minutes & puree. So easy! I save old glass Gerber jars and store the food in the freezer until I'm ready to use it. And Dax loves it. He could eat gallons of pears.
Avocado you can just mash up, same with banana. I mean really? Just go to Trader Joe's and pick out some organic stuff (bananas and avocado don't have to be, save your $) and experiment. I promise the whole process takes about 20 minutes. Throw it on the stove while your cooking dinner. Or while your on the phone ordering it : )