Here is my custom case...
Made from bubble wrapped mailing envelope, cut down to size - by placing tab on a 'corner' of envelope and tracing out a pattern with 1/4" or so of extra envelope material. I then stylishly wrapped and sealed the sized down envelope with my favourite multi-purpose wrap and fastening material. Stylish and functional!
After a few weeks of use, I noticed the bubble wrap had a tendency to leave a smudge pattern on the screen, when I extracted the tab. So I split the case back open (on a seam), and lined the front inside surface with some lint free cloth that came with some piece of hardware I had acquired over the years. I fastened the cloth using some small strips multi-purpose fastener. I re-sealed the envelope with another layer of multi-purpose fastener/wrap. No more smudges!
planned upgrades:
add a scrap of velcro to the flap and case body (probably use 2-part epoxy for this)
fabricate small pocket on front of case, so I can tuck in a few small nick/nacks (ear phones, small BT device, usb cable). I will probably make this from multi-purpose wrap/fastener and add a velcro tab to close it.
.....
I had made a decent neo-prene sleeve for my Dell Mini 9; years gone by. I have much left over neo-prene and plan to make a sleeve for my TAB. This was made as a stop gap solution until I find the time to make the sleeve. (OTH, I just ordered a new man-bag, that may make the need for a new sleeve/case obsolete).