A 3x3 Gridfinity holder for a Newmowa NP-F550 battery charger (for Sony-style camera batteries & other electronics).
I keep the power cord for the charger in a 1x3x6 plain Gridfinity bin (from the Gridfinity Master Collection).
Related model for holding a single NP-F550 battery in a 1x2 Gridfinity.
The author marked this model as their own original creation.