Planting seedlings while It's snowing outside

This year Winter lingers and Spring is delayed, it is 10th of May but there is still and odd snowfall now and then. Plants can't go in the ground yet, they would freeze at is reaches -1 at night.
So we are making dozens of paper cups to raise seedlings. There paper cups has an emotional value for me (Vineta) as they are all my deceased grandma's collected newspaper clippings. I thought that would be a nice way to dispose of them, making them into a host for new life...