Ending today at 6 am ET, Yugster offers the OrigAudio Rock-IT 3.0 Portable Vibration Speaker, model no. ROK3-W, for $7.97. Coupon code "FREEYUGBUCK" cuts it to $6.97. With $3 for shipping, that's $4 under last month's mention and the lowest total price we've seen. (It's also a current price low by $3.) This rechargeable device works with any audio device that has a standard headphone jack; it purports to convert music into vibrations that transform any object into a speaker.