OGC:Orb of Silence (3.5e Equipment)
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Orb of Silence
A three-inch sphere of black marble, the orb of silence absorbs all sound within a 15-foot radius. This acts just like the spell silence, with one notable exception — like the orb of dimensional stability, the magic of the orb of silence can’t be shut off. The effect can be blocked by a sheet of lead or similar material.
Faint Illusion; CL 3; Craft Wondrous Item, Extend Spell, silence, permanency; Market Price: 24,000 gp