When freezing vegetables we use plastic bag liners inside of cardboard boxes. We rinse and reuse these bags as many times as possible. The food that they have contained was boiled before it went into the bag. Then it was frozen. There was no chance for it to go bad, so why not use the bag again?
In the lower photo you can see a row of cup hooks in the bottom of the shelf over the kitchen sink. The cup hooks are a very handy way to dry the bags before packing them away to use again next year.
In the top photo you can see the freezer boxes we use. We use sharpies to write the contents and date on the outside of the box. Different colors for different years.
We have had a few boxes get wrecked over the years, but on the whole we are very neat packers and don't often spill any food on the boxes as we fill them. Many of our boxes date back to 1987.