Before you buy another Christmas gift, think about where it came from and where it’s headed. That is, how was it produced and how will it be disposed of? Looptworks, a Portland-based company, thinks about this constantly. Its products, a selection of handbags, iPad cases, and other accessories, are all repurposed from used materials. Registered as a B corporation, or benefit corporation, Looptworks defines its offerings as “low-impact” products, made from old neoprene (from wetsuits) and polyester – materials that hardly break down.