Looptworks is no longer making their own products, so there isn't much to recommend here anymore. They used to collect excess textiles from companies and make them into interesting products, such as duffel bags made from old airplane seat leather, or laptop sleeves made from excess neoprene from the wetsuit industry.
At this point they have transitioned to focus more on collecting and sorting the textiles in greater volume so that other manufacturers can make the actual products.
For companies with a similar vibe that you can actually purchase from directly, see also: Osom and Offcut.