Ending today, Groupon offers the AcousticSheep Noise-Blocking SleepPhones in Lavender, Grey, or Black for $23.99. Coupon code "GOODS10" cuts them to $21.59. With $3.99 for shipping, that's $2 under our mention from three days ago and the lowest total price we could find by $3. This fleece headband features embedded speakers that can connect to anything with a 3.5mm jack (iPod, iPhone, MP3 player, etc.) so you can listen to music while you sleep. They're available in XS, one size fits most, and XL.