Club Moss is common on the forest floor at my cabin in Lapland.
After the first frosts of the autumn, the moss produces clusters of yellow spores which you can see above. These spore clusters are collected and after being left near the fire overnight, they open and release large amounts of spores.
When the spore powder is poured onto a naked flame, they produce a very explosive effect as you can see here......
In the past these spores were used my magicians as part of their act when on stage.
More information about Club Moss and it's uses can be found here