I make potato bags for sell at the local country store and have never had a recall on them. Just make sure you use 100% cotton batting, cotton thread and cotton fabric. Some important rules to follow also: Use only white paper towels, Colored ones may have lead in the color. Also, make sure there is no grease from popcorn, bacon, etc. left in the microwave, as these may cause a fire too.
You can cook almost any veggie in the bag, as well as warming up tortillas. Cauliflower, cut in half, wrap half in wet paper towel and cook approx. 5 minutes. Corn on cob, wrap individually in wet paper towel, cook 2-3 minutes per cob. Carrots, wrap in wet paper towel, cook 3-4 minutes. Sweet potatoes, wrap in wet paper towel, cook for 4-5 minutes ea. Broccoli, wrap in wet paper towel, cook about 3 minutes. Frozen Asparagus, cook 1 lb 4-5 minutes, fresh 3-4 minutes.
Just remember to not leave bag unattended. Enjoy!