ISO Crushproof carrying case as close to size of iPad Mini as possible

Hey y'all! Here is some context:
I carry my iPad mini to work everyday and would love to be able to throw my iPad in any of my bags with whatever else I want and be confident that it will be safe from being crushed. I want to buy some kind of carrying case or box to carry the iPad in, as close as possible to the actual size of the iPad to not add too much bulk.
I've tried actual cases for iPads but they're all soft and don't protect it crush-wise. I've tried jewelry boxes meant to display necklaces but they're not the exact size and too deep, I've tried A5 document cases but they're always either too weak/crushable, too deep, etc.
I need something very hard, like acrylic or wood, 8"x6" and either .5" or 1" deep max. I know it most likely is not impact proof but I'm only worried about it being thrown in my packed and crammed bags.
If anyone has any ideas or knows of a good product like I'm describing please let me know!!

P.S. I know this concept in general is kind of neurotic and I could just throw the ipad in a bag and it'd be fine but I wouldn't have peace of mind haha