
Indeed!
Updated.
Should we give it some amorphous quality, to allow it to flow under doors and the like?
I suppose we can just put in flavor text, like many oozes and oozelike creatures: "Living hair can compress its body to fit into cracks as small as 1 inch wide."
Challenge Rating: x
Advancement: x
Living hair stands 5 to 6 feet tall and weighs around x pounds.
Living hair cannot speak, but understands x.
A person who is extremely vain concerning the appearance of his hair can create a living hair creature. Such a person must use strands of his own hair as material in the creation of a curtain or rug, and the rug must contain certain magic sigils as part of the design.
Bits of living hair are used by wizards in the creation of magical ropes, such as those of climbing and constriction, and nets of entanglement.
Borrowing from the hangman golem's creation...
A living hair's body is crafted from a magically treated rug or tapestry interwoven with strands of hair from the creator. The necessary threads and magical dyes cost x gp. Creating the body is a complex task that requires a DC x Craft (weaving) check. Five or more ranks in the Use Rope skill grants a +2 bonus on the Craft check.
CL xth; Craft Construct, animate rope, entangle, caster must be at least xth level; Price x,000 gp; Cost x gp + x XP.
The original description indicates this creature is entirely made out of hair, so I'd like that to be reflected in the construction text.
Similarly, I get the impression its not made out of special materials, just ordinary rubbish (like a Junk Golem or Scarecrow), so could we do without the special threads, dyes or other components.
A person who is extremely vain concerning the appearance of his hair can create a living hair creature. Such a person must use strands of his own hair as material in the creation of a curtain or rug, and the rug must contain certain magic sigils as part of the design.

(Dungeons & Dragons)
Rulebook featuring "high magic" options, including a host of new spells.