Hazy Corners from Kaleidoscope of Quilts, basically mitered squares with a solid square in the corner. The Rainbow of Malabrigo would fit right in.
Little Bricks, from Glorious Patchwork. Basically it's alternating rectangles with the stripes going horizonally and vertically. He's got a few plaids in there. I could do blue/purple stripes, with yellow/orange stripes. Green could be the garter stitch border.
Pieced Stripes from Glorious Patchwork. Years ago I sketched a blanket idea based on this quilt, using greens and whites with a border of squares. It's inspired by a Japanese kimono pattern, which I've seen in one of my kimono books. Talk about great sources of inspiration!
Some of the yarn is from my stash (Mountain Colors' Bearfoot, Brown Sheep Company's Wildfoote, sock yarn from KnitPicks, Spinrite's Muskoka, Cotton Classic, Peaches 'n' Creme), some I ordered from KnitPicks. Over Thanksgiving, I showed him the catalog and asked him to pick colors he liked. He wanted blues, green, and grey (bor-ing! but it's his blanket, not mine). The red/grey is my idea. At the bottom is a crocheted blanket I started with sockyarn. Who am kidding? That project will take forever, so it will frogged.
I thought about doing something from Mason-Dixon Knitting and last night, started swatching. Then this morning, I realized that I had to make Chinese Coins. Here's a picture from Beautiful Quilts: Amish & Mennonite, another great book for inspiration.