https://civitai.com/models/1757437/studded-panel-gag-n-things-or-four-shalt-thou-not-count-or-ilxl?modelVersionId=1988953

Gag: Usually does 4 studs in the center. The cloth backing is shy and may not appear.

To go crazy add open mouth

Everything else: will create larger, more cohesive studs

Str 0.8 or so

leather gag, gag studs, g4g, covered mouth

studded blindfold

studded corset

studded collar