The 2.5D elephant is part of the three layered animal (tla) family. When build from beech plywood it's sturdy enough to be played by children. The birch plywood-version might be admired by adults for the naturalistic side-view and the explicit grain.
When scaling the size should be referenced by the width of a foot.
This build was done on a desktop cnc-machine by Stepcraft from 6 mm birch plywood using a spiral-toothed 1.2 mm flute. After machining it needed a little sanding and simple gluing together.
A laser cutter might be a good alternative tool to create (even) smaller versions.
Probably you could make a aluminum version and screw the parts together to get tiny key fob.
You can visit https://www.zenziwerken.de/en/Toys/Animals for more animals.
I searched the net for reference pictures and traced the vectors directly using Illustrator. Then I build the model in SketchUp to take a look at the design before wasting material.
The circles can be used for alignment and/or as screw-holes.