This is a Lecanicillium or Simplicillium species (a mold!) growing in a Petri dish. It was taken under my microscope with some extra rainbow goodness from my scope's optics. The little 'pins' are no more than 50 micrometers tall (yes, I said micrometers). The orbs of various sizes are water droplets.
This is not the mold we were trying to grow. Rather, it is one that is commonly tracked in by interloping mites. Oh, how I hate mites. No wait, I think I love them. Aren't they interesting! Once I saw a big one slurping up a hypha like a big piece of spaghetti.
I don't write much about mites, but you can find more weird fungi on my blog.