Identify new growth

[LouieB]

Hi I picked up a blue shroom from the lfs about a week ago and i just noticed some other things growing also on the rock. In the first picture it looks like a tiny feather duster, on the second pix it looks like some zoo's i think but I am not sure and need some advice. If they are zoo's should i be concerned about them being so close to the shrooms? TIA

 

[Fluff]

I think you are right on your ID's and no, the zoos next to the shrooms shouldn't be a problem.