My 18 month old is obsessed with yogurt bites. Have you seen those in the baby section at stores? Unfortunately, the bags are small and typically cost a minimum of $1.99 each! I also was concerned about their natural nutritional value considering that they really are a processed food of sorts. One day I saw something on Pinterest that made me think of another option. Why not make my own!?
To make yogurt bites or apple sauce drops simply snip a tiny corner off of a Ziploc bag. I did find that Ziploc works far better than fold top, though maybe you would be less messy than I am! Spoon a few tablespoons of yogurt or apple sauce or baby food into the bag, seal it and gently squeeze it toward your corner. Then dollop away!
For freezer space, I found that using a toaster oven tray lined with wax paper or parchment paper worked best. You could experiment around and see what works for you!