Daisy Cottage Designs has links to 16 free crochet patterns for boot cuffs, while craft blog Jenny and Teddy offers over 30 links to free and easy patterns from all over the Internet. There are patterns for cuffs in many different styles, including ones with bows, buttons and edging.
Moogly has a roundup of 10 free crochet boot cuff patterns from around the Internet, including patterns for cuffs with scalloped edges and others with basket-weave motifs. Crochet Dreamz has a free pattern for two-hour boot cuffs using a size F or G hook and worsted-weight yarn. Crochet Dreamz also has a pattern for matching fingerless mitts.