Think about where the money is: there is more funding and interest in supplies for camping and ultra athletic activities than for disability aids. (Follow the money!) As a result, it is hard to find beautiful, functional tools for everyday life. The good news is we can adapt a lot of these. Even better, these often have a health/fitness focus. For example, rehydrated meals for mountaineers will have the nutrients and macros people need, and will have lots of research money behind them. Protein bars made from whole ingredients are another example. Check out your local outdoor store/website for a start. Look for outlet deals and sales. The activities to search include mountain-climbing, sailing, hiking, camping, backpacking, ultralight.
Try lightweight cups and bowls, freeze-dried rehydrated meals and other supplies
More ideas: cooling/heating clothing, lightweight space blanket, folding lightweight furniture, water-free shampoo, tiny toothbrush (and there are many more)