making/replacing case for bits and tools

making/replacing case for bits and tools

So i recently purchased a manta bit set and was wondering if anyone had taken the labelled foam insert from one of the bit sets and made or fit it into another form of case. I do like the case that it comes in, but i’m a tradesman and need something a little more secure/waterproof for example clips and a rubber seal. Thank you to anyone who can help me out!