3.5mm (1/8) Stereo Audio Plug Terminal Block : ID 2790 : $2.50 : Adafruit Industries, Unique & fun DIY electronics and kits
Speaker Banana Plugs Pure Copper Audio Jack Connector - China Banana Plug and Audio Connector
Amazon.com: Fancasee 2 Pack Replacement 3.5mm Male Plug to Bare Wire Open End TS 2 Pole Mono 1/8" 3.5mm Plug Jack Connector Audio Cable Repair : Electronics
Amazon.com: Mini XLR Male to 3.5mm Stereo Audio Plug Cable, 3-pin Mini XLR Male to 1/8" TRS Plug Cable, for BMPCC 4K Camera Video Assist 4K Sharp 8K, 3.3 Feet - JOLGOO :