Breadboard-Friendly 3.5mm Stereo Headphone Jack : ID 1699 : $0.95 : Adafruit Industries, Unique & fun DIY electronics and kits
3.5mm Stereo Minijack TRS to Dual XLR Male Audio Cable 10ft | AxcessAbles | TRS18-DXLR403M
Amazon.com: KOOPAO Headphone 3.5mm Splitter Mic Cable for Computer, Headset 3.5mm Female to 2 Dual Male Microphone Audio Stereo Jack Earphones Port to Gaming Speaker PC Adapter : Electronics
Monoprice 3.5mm TRS Stereo Plug to 3.5mm TS Mono Jack Adapter, Gold Plated - Monoprice.com
PSG00047 - Pro Signal - LEAD 3.5MM STEREO JACK PLUG TO PLUG 0.5M ROHS COMPLIANT: YES
Stereo audio adapter, 3.5mm F Jack & 2.5mm M 3-Cond Plug
Amazon.com: 3.5mm Stereo Jack To 2.5mm Stereo Plug Adapter : Electronics
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 :