1/4 20 bolts (or screws) can be bought in long lengths at hardware stores and then taped to heavy objects or build this sort of mount maybe:
Aiming an omnidirectional mic isn't all that important, getting the right height IS important especially since, for all I know, the hi frequency absorbency of the bed surface may differ greatly based on just a short change in distance.
In A/V reproduction accuracy, there IS no concept of "accounting for personal taste/preference". As art consumers we don't "pick" the level of bass, nor the tint/brightness of a scene's sky, any more than we pick the ending of a novel or Mona Lisa's type of smile. "High fidelity" means "high truthfulness", faithful to the original artist's intent: an unmodified, neutral, accurate copy of the original master, ideally being exact and with no discernable alterations, aka "transparency".
Last edited by m. zillch; 04-02-2015 at 11:32 AM.