Just as a future thought, I use yogurt containers (the small single serving ones) like you would get from Kroger's or Walmart, not the Dannon or Yoplait ones that are angled the wrong way. I poke some holes in the bottom with a drill, fill them, plant seeds, when it comes time to transplant, a gentle squeeze on the side lets them out. I put them in short plastic trays to store, transport and water. You can also use cottage cheese/sour cream containers too. They last forever, you can sharpie the name of the plant on them, and once you're sick and tired of them, into the recycle bin they go. They ain't too pretty, but they are effective and they store over winter very compactly.
just a thought for next year.