Christmas wreath decoration kits, pack of 8
£9.99

Someone with a glass jar already who wants to pick their own plants.
£18.99
This PYEF CRAFTS kit contains coconut soil, decorative stones, sphagnum moss, activated charcoal, tweezers, a spoon and an illustrated guide. The listing says the soil comes as a compact brick that expands with water and that the supplies are sized for a 3 litre jar. In a 2 litre jar there is some left over, and in a 4 litre jar the layers are a little thinner. The product details give the weight as 0.63 Kilograms. A jar and the plants are not included, so choose both before you start.
Pictures show what is in the pack. Box print and colours can vary.