This is in my bag that fits almost all GoPro accessories. And most important is that it is portable, small.
I bought a bag for tools.
Step 1: GoPro Case
Barriers I made from cardboard (architects used for making models), and covered with plush label. To reduce the possibility of damage. And now the picture of how it all looks together.
Step 2: GoPro Case
I used a sponge to make a protection for GoPro and LCD
Step 3: GoPro Case
This is how it looks finished and this is what can fit into it