MontanaSolarCreations: DIY Upcycled/Repurposed Sweatshirt to Baby Sleep Sack Tutorial. Extra great idea since sweatshirt material will be heavier than traditional, store-bought sleep sacks. Cute add-on gift for a shower! Great for winter-time babies. Blogger suggests using sweatshirt without a zippered neck to avoid extra sewing steps.
Baby blankets: They're super-easy to sew: Pair a lightweight fabric, such as cotton or seersucker, with thin flannel. Cut both into 34-by-45-inch pieces; pin with right sides facing. Machine-sew edges with a 1/2-inch seam allowance, leaving a 3-inch opening. Turn blanket inside out; hand-sew opening closed.