This is the kind of seat-of-the-pants engineering genius that you only find in hackspaces, garden sheds or Shenzhen.
Multifunctional OTG adapters: Micro USB 3.0, USB-A 3.0, and USB-C 3.1 adapters convert USB-OTG capable smartphones and tablets with micro USB ports
SZFUDIGO OTG Adapter 2 in 1 Type C Micro USB 3.0 OTG Adapter Converter That is Used for Data Synchronization The OTG Converter is Suitable for Media
OTG USB-C 3.1 Male Type-C to USB Adapter 3.0 A Female Z2E3 Converter T7B8
USB-A to Female Micro-USB Adaptor
Micro USB OTG to USB Adapter - M/F - USB Adapters (USB 2.0), Cables
Search Results for micro+hdmi
Duttek USB 3.1 Type C OTG Adapter, USB C Female to Micro USB Male OTG Converter Charging&Data Sync for Galaxy S7,S7 Edge, LG G4, Nexus 6 (Silver) : : Electronics
USB OTG Host Cable - Micro-USB Male to USB-A Female
1~8PCS 2-in-1 Type-C Micro USB OTG Adapter For Android USB 3.1 Data Transmit Converters For Tablet Hard Disk Drive Phone - AliExpress
Micro USB Male to USB 2.0 Female OTG Cable for Raspberry Pi Zero – Everything Pi
USB 3.0 Cable USB A Male to Micro USB B Male - 0.5m
Raspberry Pi Zero W/ WH USB To Micro USB OTG Small shim
5in Micro USB to USB OTG Host Adapter M/F : Cell Phones & Accessories