Earth stars are fungi with such an exotic shape they look like they might have been dropped from outer space.
They have a hole in the top of their fruiting bodies for their spores to escape, powered by raindrops landing on it.
These were growing in the front of a garden, possibly associated with the pine trees. Although I walk past the garden at least once a week on visits to the supermarket, the earth stars had been around for some time before I noticed them.