Eco-Friendly alternatives to replace plastic wrap and bags for sandwiches are growing in popularity, but they may not be a truly sustainable choice. We're particularly concerned about bamboo products after the FSA banned them from sale in the UK pending a review. Here's the FSA's press release: https://www.food.gov.uk/news-alerts/news/notice-to-retailers-plastic-containers-or-utensils-containing-bamboo
We use bamboo cups and lunch boxes in our home, although luckily it's a brand that contains no Melamine (eCoffee Cup).