I found an tin box that a watch came in that was just about the right size to keep some things in my bag rather than it all rattling about at the bottom of my laptop rucksack. The problem is that the case kept popping open and me being right back to square one!
So, using some gaffer or duct tape and velcro cable ties, I was able to hinge and securely keep the case closed in my bag.
I layed out 2 lengths (approx 6") and slightly overlapped them.
Then layed another length over the join, sticky side down.
- This stops the tape from sticking to edge of the case.