I've googled several combinations of words and still can't find the one I've seen before.
Its a small, thin, light weight round edged box, with a cable; the online sight usually offers you an option to mix/match box sizes and the keys can be alike or different. I think about $30 each.
It will gift-wrap a new Bersa Thunder 380 (in nickle) that I picked up for the wife earlier today. The gun came in a UGLY cardboard box.
This safe box will (occasionally) be used under a car seat as well.
Thank you, Wrascal