Musician Richard Upchurch has created the Grimace MP3 Pillow, a wireless mp3 controlling pillow. It’s not a pillow with a speaker in it- this pillow uses conductive fabric and threads to actually control the music. The snap, velcro enclosure and zipper all tweak the music in different ways making it a fully interactive totally cute plush toy pillow. Check out the video to see and hear it working:
Angelelec DIY Open Sources Conductive Fabric, Conductive Fabric - 12"×13" Ripstop, This is a Conductive Knit Fabric for Use in E-Textiles. Highly Conductive With a Surface Resistivity of < 1 Ohm/Sq.