Here's a simple pattern for you for charity or personal use:
Snuggie Blanket (20" by 24")
by Mary Morris
7 - 8 ounces Caron Simply Soft
Size 7 needles; machine knitting instructions to follow
Cast on 100 st. Knit to desired length. Loosely cast off. Block. Crochet sc, ch 3 around, frontward or backward.
Use Caron Simply Soft Brights; some of the other CSS yarns are too stiff.
Standard machine, tension 10, Cast on 100 st every other needle. Knit 148 to 150 rows. Latch hook bind off. Block. Crochet sc, ch 3 around, frontward or backward.
For stripes, change colors every 21 rows. This gives 7 stripes.