Look for dead space under stairs and in deep walls. There is often room under a staircase for a small closet, powder room, or even built-in shelves for cataloging books, files and other knickknacks that create clutter.
Design Originals Garden Design - Why choose a Garden Designer
The most common method of growing mushrooms is from spawn / spores. However another method which is just as viable is to bypass the spores and go straight to the mycellium from which the mushrooms sprout. This can be done by using the mushroom stems.