I had a little moss left over from a recent project (long story--I'll tell you sometime later) and remembered this tutorial on Design Sponge about making terrariums using found items. Can I tell you how much fun this was? I wish I had been a little more organized; I would have collected wide-mouthed jars and taken the materials to Tsia's school. The kids would have loved to make them!
Right now the teacup and two Mason jar terrariums are living on our dining room table; they make great centerpieces. I'm still looking for little seedlings to add a bit of height and variety, but that may need to wait until next spring when baby plants are alive again (assuming the terrariums survive that long). Even if they don't survive the winter (or my really sorry lack of plant-keeping skills), I'm noticing lots of moss in the cracks of the sidewalks. Maybe Tsia and I will plant more terrariums together next spring.