Revo Hot Shoe to 1/4"-20 Male Post Adapter SA-CS-14M B&H Photo
Neewer ON/OFF Camera Speedlite TT560 Flash for Canon Nikon Panasonic Olympus Pentax and Other DSLR Cameras,Digital Cameras with Standard Hot Shoe – neewer.com
Artisan Obscura - Camera Accessories
Paul C. Buff, Inc. | Hot Shoe Adapter
AS-15 Sync Terminal Adapter (Hot Shoe to PC) | Nikon
Midwest Photo LumoPro Universal Hot Shoe Adapter II
Flash Mount Hot Shoe Camera Tripod Flash Adapter Ball Head DSLR Bracket Mount UK | eBay
Lime One is a Tiny Light Meter that Attaches to Your Camera's Hot Shoe | PetaPixel
Nisha Hot Shoe/Tripod Mount HTS-T B&H Photo Video
Sony Multi Interface Shoe: Problems/Solutions + How to use the flashes on a standard hot shoe - YouTube