"Why couldn't you just wrap the taters in a tea towel and put them in the micro?"
I did just this last night - out of curiosity. I wanted a baked potato to put in a salmon patty recipe so I scrubbed a small one well, wrapped it in a paper towel, then in a 100% cotton tea towel and microwaved it on full power for about 4 1/2 minutes. I turned the towel package every 60 seconds or so since I don't have a turntable. The potato when done was very hot, quite fluffy, with soft skin. I let it cool a bit then peeled it and mashed the potato with a fork to mix with the rest of the salmon patty ingredients. I used the towel folded over in a double thickness and left one end sort of open for steam to escape. It appears there was no damage to the towel. My MW oven is not one with very high wattage, but it works for me.
I've got plenty of leftover batting and quilters' cotton fabric, so I may make myself a potato bag. But then......where to store it???? LOL!