A friend of mine makes and sells some awesome stuff. My favorite is the reusable sandwich bags. They have a water proof lining and are easy to put your food in when you pack a lunch bag and are easy to wash and use again. I have one of her sets with a cloth lunch bags with matching snack bags to put in it and its awesome.
There are also some other goodies on there like wet bags (for diapers), kids' clothes, toys, and even reusable paper towels (that I haven't tried yet.)
http://WWW.wrap-n-mat.Com/fabrics.php I bought 2 wrap n" mats for my hubby almost a year ago-they're still like new! They're great for sandwiches--reusable-and washable!! They close w/ velcro. They're cute--my hubby's coworkers teased him about how cute they are!!
Hey Guys-here is another website that I buy from. I use the stainless steel tins from here as well and the snack bags. I am about to order the Bulk bags and try them for storing rice and beans. Everything is machine washable or dishwasher safe.