Amazon.com: 3.5mm Stereo Male to Dual 3.5mm Mono Male Audio Cable, 1ft 3.5mm 1/8" TRS Male to 2 x 3.5mm 1/8" TS Male Y Breakout Cable Splitter Adapter for Headphone, Speaker :
PULSE 3.5mm Stereo Jack to 2x 6.35mm (1/4") Mono Jack Plug to Plug Lead 1.2m - Walmart.com
3.5mm TRS to 2 Dual 1/4 Inch TS Stereo Audio Breakout Cable Adapter - 3.5mm 1/8" Female to 1/4" 6.35mm Mono TS Male Headphone Jack Plug Y Splitter Cable Combiner Connector Wire