I described a really cool case I saw back in this thread.
https://www.mobileread.com/forums/sho...?t=8654&page=4
None of youall confessed to being the case owner,

so I started a quest for the polycarbonate case to put my Reader in my briefcase. Alas, nobody sells it, but you can make your own for about $10. All you need is one tricky item, but for that we have the Internet.
You can get a polycarbonate DVD anti-theft case for $4 plus shipping from Brodart Library Supplies at the following URL
http://www.shopbrodart.com/shop/cb/p...atnum=86657001
The case is 8 1/8" x 5 7/8" x 3/4", and that will be the tiny amount of space taken up by your Reader once inside.
Picture #1 shows the case as it comes from Brodart. Alas, this case is designed to prevent DVD theft, and it can only be unlocked with a special tool. Fortunately it comes unlocked, and you can disable the lock mechanism by inserting a putty knife as shown in Picture #2. Just pry it up a little and shake out the metal locking gizmo. Throw that out, and you can use the latching mechanism to keep your Reader snug inside. Picture #3 shows the locking bits removed.
Since the reader needs a little cushioning, I got some weather strip at my local Home Depot for $2, as shown in Picture #4. You could use 1/2" weather strip, it would fit better, but my Home Depot only had it in ugly grey.
Line the inside half of the case (it slides inside the other half as you close the case) with a strip of cushion as shown in Pictures #5 and #6. Case complete.
Picture #7 shows the Reader inserted in the case, Picture #8 shows the Reader cover closed, and Picture #9 shows the case buttoned up.
This case provides good protection from minor shocks and squishing, but it only provides minimal protection from pointy thingys. My briefcase has lots of flat things, like magazines and folios, so I mostly worry about my Reader being crushed. If you put yours in a bag where it could be poked, the polycarbonate case could be cracked. You could reinforce it with 1/8" plexiglas to make it more poke-proof and still less than 1" thick.
(Apologies to all the folks who use the good measurement system, we just can't buy things labeled in meters here in the US.)
/Randy