Custom Camera Bag - Complete GoPro Kit

This instructable will show you an inexpensive and easy way to make a custom case for carrying a GoPro Hero camera and equipment, but the idea could be applied to many other things.  I have a bad habit of just throwing everything into one bag, but since the lens on my new Eye of Mine flat lens underwater housing is prone to scratches I decided it was time to get organized.

I was going to buy a hard case (I've heard of people buying things like cheap handgun carriers), or re-purposing an empty drill case, but the GoPro is already somewhat durable so I really wanted this more for organization than protection.  Here were my goals:
1) Small, comfortable, and convenient to carry around and travel with
2) Protect lenses and other equipment
3) Keep all of my goodies well-organized
4) Doesn't say "there's something expensive in this bag"

To duplicate this you will need the following:
1) Bag, case, or box in need of re-purposing (thanks to my uncle for a cool retro leather bag)
2) Block of foam, you choose the hardness (I had some lying around, but a craft store will usually have this)
3) X-acto knife or similar cutting tool
4) Marker to draw out your plan

After you've found your bag and collected your materials, cut the foam to fit the bag.  I wanted to be able to have all parts with me in case I needed them, but I really wanted fast access to things I might need quickly (the camera, extra batteries, waterproof door).  With an idea in mind, lay each piece out and draw an outline.

Once you have a plan (here's your last chance to measure twice, so you only cut once), get down to business.  It's a good idea to pause every few minutes and make sure things are coming together the way you want them to.

Once you put the final touches on the foam that's all there is to it.  I found that I wanted a little extra space for the buttons and other mount parts that I didn't take into account initially (I decided that I wanted to have the option to store both housings in either location).