This is a hot shoe cover optimized for the Multi-Interface Shoe that is being used on all Sony cameras. It should fit on any other camera brand as well though. I modeled it similar to the original that ships with the cameras but improved the grip on top.
There are two versions: One that stays close to the original design but is more challenging to print and one that has a flat bottom and can be printed very easily and quickly.
The author marked this model as their own original creation.