Oberon Design
http://www.oberondesign.com/
Piel Frama
http://www.pielframa.com/cases/
Saddle Back Leather
http://www.saddlebackleather.com/
etsy.com is a place to market handmade or vintage items for small artisans to sell...
they had 1,054 search results for the ereader category at
http://www.etsy.com/
a few etsy examples below
Hobop
http://www.etsy.com/shop/hobop?section_id=6353468#
Covers made from vintage books
http://www.etsy.com/shop/vintagecovers#
Borsa Bella is the home of the ORIGINAL padded fabric bags
http://www.etsy.com/shop/BorsaBella?
Handmade kindle/nook cases
http://www.etsy.com/shop/oskarmycat
Rogue Theory handmade + functional
http://www.etsy.com/shop/RogueTheory
Kindle Sleeves, Wristlet Key Chains, Ipod Cell Phone Cases by Puppy Dogs N Polka Dots
http://www.etsy.com/shop/PuppyDogsNPolkaDots
Creative paperworks, eReader portfolio covers, journals & media, photocollages
http://www.etsy.com/shop/belisledesigns
ElizabethDavidDesign Kindle Nook Ipad Covers
http://www.etsy.com/shop/ElizabethDavidDesign
Handmade Vintage Fabric Cases by Blythe King
http://www.etsy.com/shop/blytheking