I find it calming to rub the edges of stiff fabrics under my fingernails. Sometimes I fold the edge into a point and rub it on my fingertips. Or I'll rub the edge of the fabric in the crevices between my fingers, or the crevice behind my ears.
The fabrics can range from bedding to linings of coats, or tags on decorative pillows. Wherever there is a crisp edge.