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I use an old one quart juice can for mine. Been using it for years. When its finally full I'll crush the top and put it in the recycle. I keep it under the bathroom sink, no one sees it and it serves the purpose.
I go for a DFS on every shave. If a BBS happens to present itself, so much the better, but really, the only one who knows you've got a BBS is going to be yourself. That being so, over shaving to try for the allusive BBS is not worth the effort and the resulting irritation, nicks, etc. etc...