Get the “gypsy” look by pairing red, dark purple, pink, yellow, bright blue and spring green. Get the “old country” look by making bright squares but putting them together with a black border. Get a classic American look by combining, white, red, blue, and pale yellow. If you don’t want the granny square look but you want to still use the method to get a fast blanket, use only two colors (white and blue, for example) to create a more subtle look.
If you’re worried about the hook size, do a test patch with a few rows of double crochet. If you have thicker yarn, use a thicker hook, and if you have thinner yarn use a thinner hook.
Change to 1 chain stitch between if you want a rounder, tighter square as shown in the pictures.
You can make a potholder by backing your square with sturdy cloth, make an ornamental doily by using a thinner yarn, or even a baby blanket by using soft yarn in baby-friendly colors. You can make an afghan by either making one huge square or by attaching a number of small squares together. Squares can be attached by sewing or by crocheting together using slip stitch or single crochet.