Prayer shawls are a great comfort to people as well as being a wonderful gift to give or donate. Here are a list of links to patterns that you can use to bless someone with a Prayer Shawl of their own.
Crochet Wide Scarf/Prayer Shawl
The Original Prayer Shawl - Both knitted and crocheted instructions here. This is a very simple pattern, great for beginners or for a quick project.
3 Easy Prayer Shawl Patterns - Both knitted and crocheted patterns here.
Charmed Prayer Shawl
Shawls and Stoles - a very large collection of knitted patterns