You can safely microwave KFC paper containers.
The KFC paper containers are microwave safe and can safely be microwaved for a few minutes to reheat the food in them.
You can microwave takeaway containers as long as the container has no metal handles.
If the takeaway container has metal handles those handles must be removed before microwaving them.
Although most takeaway containers are not considered to be microwave safe they are okay to microwave for a minute or two minutes to reheat the food in the takeaway container.
It's actually safe to heat up foods in glass, ceramic and containers with a waxy finish.
This includes Chinese takeout containers however you must remember to remove the metal handles prior to microwaving.
You're also good to use paper goods (such as paper plates and paper towels) as well as parchment paper in the microwave.
You can microwave Styrofoam.
Styrofoam is microwave safe as long as you microwave the Styrofoam for only a few minutes.
If you microwave Styrofoam longer than a few minutes then it may begin to melt.
Mostly Styrofoam is good and safe for reheating foods and drinks in the microwave for a few minutes but Styrofoam is not good for cooking food in the microwave longer than a few minutes.
I microwave food on Styrofoam plates and in take away Styrofoam containers all the time for a few minutes and it's never been an issue.
I even heat water up in Styrofoam cups for hot chocolate or even reheat coffee in the microwave in Styrofoam cups.
Styrofoam containers are not meant to withstand too hot of temperatures so microwaving the Styrofoam containers longer than a minute or so can cause the Styrofoam to melt.
Just don't cook anything in the Styrofoam longer than a few minutes and watch it and if it's starting to melt then it's been in the microwave too long.
Microwave ovens vary in power so you have to watch how quickly your Styrofoam heats up.