Absolutely no offence taken. It does seem kind of silly that the amount of powder to fill a bag with containers likely represents about $1000 worth of powder and I'm online asking about their alternate uses.
However, they seem like really good quality containers that I'd like to put to another good use instead of throwing them out. The good thing is that I'm getting some ideas and I also know what to do about the neighbours barking dog.
The funny thing is that I wonder this exact same thing every time I throw a powder container into the Recyceling bin...