I decided to take the Costco plastic containers and use them as my seed starters. I filled them with dirt and planted some seeds. The plastic containers when closed act as sort of a mini green house so you do get good growth, which is perfect for me because I don't have a green house.
The whole apple containers are shallow so if you wait too long to transplant, your plants won't do well.
I sewed juice pouches together to make planters so that I could transplant my flowers that I started in my plastic containers.