Plastic sandwich wrap is not just wasteful and expensive, but polluting to make, as well as to use. Clingfilm also cannot be recycled, as well as having health concerns. If you take your lunch to work or college, here are some better reusable options.
Wipe-clean lunch bags with polyester lining (or launder in a microplastic catch bag). Never give stale/mouldy/crusty bread to birds (choking hazard) nor sandwiches (salt is toxic and butter can smear on feathers, affecting waterproofing/insulation).
Keepleaf Insulated Lunch Bag is made from thick organic cotton canvas and contains insulated felt (made from recycled plastic bottles) and waterproof polyester lining. Spot clean and line dry, it also has secure Velcro fastening and an handy ID card holder.
Bric Cotton Canvas Lunch Bag features a buckle fastening and practical carry handle, with adjustable strap to fill to the top, or roll down small for snacks. The same company (founded by a former costume designer) offers bike bags (that fit neatly onto handlebars), backpacks (made with waxed shower-proof coating, sold with a life-mending service) and bum bags (the main compartment can house a small water bottle and essentials).
Tabitha Eve Vegan Leather Lunch Bags are handmade from wood pulp, synthetic latex and cotton. At end of life, you can roll down the edges to use as a plant pot (know toxic houseplants to avoid near pets, and avoid foliage facing windows, to help stop birds flying into windows).