ATC via Amazon offers the ANNT DJ Club Disco RGB Crystal LED Ball Stage Light for $17.99. Coupon code "KVJNWTH8" cuts that to $10.07. Plus, Prime members bag free shipping. (Non-members can spend $49 or more to qualify for free shipping; otherwise, shipping adds $5.89.) That's $7 off and the lowest total price we could find. This voice-activated stage light features strobe lighting effects in red, green, and blue. Deal ends March 27.