You'll have to sift through the sock monkeys and tractors on plaid fabric, the home dec fabric, and the flannels, but there are a lot of choices out there if you can spend some time looking.
Fabric Depot
http://www.fabricdepot.com/index.php...chstring=plaid
Fat Quarter Shop
http://www.fatquartershop.com/index....Page_Id=15&T=1 (Plug 'plaid' into their search box, the hot link had too much personal info in it from cookies)
Hancocks of Paducah
http://www.hancocks-paducah.com/Item...plaid--srcin-1
Keepsake Quilting
http://www.keepsakequilting.com/prod...rap%20bags.htmhas scrap bags, some are all plaid, but I'm not sure if they actually contain the fabrics pictured. Want me to run up there and look? I'll use any excuse to spend a few hours in that heavenly store!! :lol: