I was at my sister-in-law's place today. It was unseasonably mild weather today, just like spring. (I saw later on the news that we almost set a record high temperature for January.) So we did a spring-like thing, and when I was walking out to my car, we wandered around her yard and looked at the flower beds. She has daffodils just poking their tips out of the ground.
Her son-in-law at one time set up some hollowed out sections of tree trunks as planters and planted young trees in them. The hollow sections are growing some pretty fungus.
Look at this:
So cool. And this one has pretty fungus, plus the way the bark is separating from the trunk is pretty: