DIY Adapter 6.35mm 1/4" TS mono plug to BNC male for HD-SDI Phone AV audio video 756330741594 | eBay
3.5mm TRS to 1/4" TS Adapter
Amazon.com: Ancable 2-Pack 1/4 Inch Right Angle TS Male to 1/4 Inch TS Female Adapter, 6.35mm 1/4" Mono Connector for Bottom Plug Guitar/V-Shape Guitar/Front Facing Jack Guitar : Musical Instruments
Amazon.com: Hosa GPP-419 Female TS 1/4" to Male TRS 1/4" Adaptor : Everything Else