Taller Skadis box

This is a simple but practical remix of the original Skadis box.
The modification raises the outer wall from 4 mm to 7.5 mm, making it easier to use with small notepads that would otherwise not fit well.
If you need to store mini notepads or similar small items on your Skadis board, this version might be more useful than the original.

I increased the outer edge height from 4 mm to 7.5 mm so that very small notepads can sit securely inside without falling out.