You can find the keychain version here: https://makerworld.com/en/models/502493

This movable jumping spider comes in two versions. The first version is a single model with eyes. The second version has eye holes, and you can print the eyes separately in different colors or use flat beads.

You'll notice that both models have a small hook near the butt, so you can make it into a keychain or hang it up.

The model will also show three disc-shaped structures near the legs. They are only one layer high. If you use a rim

If anyone wants a version without the disc, please let me know, but I think most people will find them useful. Alternatively, you can reduce the model to the printable size based on your layer thickness, and they will disappear.

As for scaling. This model can be scaled down a bit, but I suggest you check your slicer to see when the parts start to merge, so you can determine how small you can print it.

This model is entirely my own creation, and I grant the following permissions:

You can:
Sell printed models
Create a remixed version and indicate the source

Please don't:
Selling model files
Claiming that the model is your own
You claim that the remixed version is entirely your own work

If you want to create a remix version and need my Blender files