The Bullion block stitch is my favourite stitch. It bulks up a motif and you can create flowers and clovers with it. With the Bullion Block stitch, you can also make decorative cords, belts, and accessories. The crocheted cord in the picture below is made with Bullion block stitches. Get this pattern here.
Crochet Bullion Block stitch tutorial
How to do the bullion block stitch: 1 dc, yo and insert hook around dc, pull through yarn so you have 3 loops on hook, repeat 3 more times, yo and pull through all loops on hook, sl st in same st as ch 3.