Here's the start of my newest project - Navajo Blanket. Crochet. Single-stitch mostly. The trick with this one is I have to do one row at a time. Do a row - cut it off - go back to the starting side and create a new row. I can do a little over 2 rows in an hour - it's a big blanket.
The diamond design (that's just forming here) is a double chain in the row below the one you're working on. That trick took me awhile to get down. My diagnals are a little crooked starting out - but that's my personal touch! :-)