Amazon.com : Pixel TF-322 Flash Hot Shoe Sync Adapter with Extra PC Sync Port Dedicated for Nikon DSLR & Flashgun : Camera Cases : Electronics
FlashZebra.com: PC to Flash Hotshoe Adapter (Item #0065)
Pixel Tf-334 Hot Shoe Adapter For Converting Sony Mi A7 A7s A7sii A7r A7rii A7ii Camera To Canon Nikon Yongnuo Flash Speedlite - Photo Studio Kits - AliExpress
PCMCIA To Compact Flash Card Adapter For CNC Program Downloading - CNC Specialty Store
USB 3.0 Card Reader, TSV TF Card/SD Memory Reader Adapter Supports SD/Micro SD/SDHC/SDXC/MMC, Mini Camera Flash Reader Compatible with Windows, Mac, Linux - Walmart.com
Godox Adapter Ring Kit for MF12 Macro Flash | Store Godox.eu
Polaroid Flash adapter / Flashbar alternative for SX-70 and other Polaroid cameras | realfilmreel
Amazon.com : Optical Flash Slave Trigger JJC Hot Shoe Sync Adapter with PC Socket,Optical Sensor & 1/4"-20 Threaded Socket Cold Shoe for All Flashes Speedlight with Standard ISO 518 Hot Shoe-1 Pack :
Flash Memory Adapter for some Game Boy Cartridges from J.Rodrigo on Tindie
Pixel Flash Hot shoe Adapter for Sony Alpha A900 A850 A750 A700 A550 A500 A380 A350 A330 A300 as FS-1100