DIY Magnetic Connector - Right Angle Four Contact Pins : ID 5358 : $6.50 : Adafruit Industries, Unique & fun DIY electronics and kits
Amazon.com: HytePro Magnetic Connector 5 Pin Pogo Contacts Male Female Pair M413 Spring Loaded 1A Carry Power Charging PCB Vertical Mount Connection for Electronic Device (10Pairs Packing) : Electronics
DIY Magnetic Connector - Right Angle Three Contact Pins : ID 5360 : $5.95 : Adafruit Industries, Unique & fun DIY electronics and kits
GTC Magnetic connector, Rotating - RODAN Technologies