I'm going against the crowd for kicks and giggles. This is cool! It keeps things safe. Battery Box
Item Clue #9 - some people think I'm a square but I really am pretty cool
I have to also go with........
Battery Box
Dang!! You two beat me to it... that's what I get for answering the phone...

I was gonna say a Battery Box... because they might be considered 'old fashioned' (ie: square*) but they keep your batts from accidentally shorting out (ie: cool) if you just throw them in your purse (or bag) loose...
* (and although the box is kinda 'square' in shape, it does have rounded corners... lol)
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