Amazon.com: KabelDirekt – RCA to Jack 3.5 Adapter Cable – 6 ft – Versatile Plug-and-Play Audio Cable (Aux/3.5mm to 2X RCA for Connection to Smartphone, Tablet, Home Theater, soundbar, TV, Notebook, MP3) :
Tandy - 2m 3.5mm Stereo Jack Plug to Twin Phono Cable
LINDY 35685 RCA / Jack Audio/phono Cable [2x RCA plug (phono) - 1x Jack plug 3.5 mm] 10.00 m Black | Conrad.com
Amazon.com: UGREEN 1/8 to 1/4 Stereo Cable 3.5mm TRS to 6.35mm Audio Cable Guitar to Aux Male Cord with Zinc Alloy Housing and Nylon Braid for Guitar, Laptop, Home Theater Devices, Speaker
A guide to audio connectors and cable types - SoundGuys