The "plate and paper towel" method only works for a very few pieces because the paper towels get saturated and you end up in effect frying the bacon in it's own grease, which pops and makes a mess in the microwave. I also found that the paper towels get glued to the bacon so badly you can't get it off, so you either toss the affected part or eat the paper.
So, I looked at the commercially-available gadgets (cost around $14 and up) and realized that all you need is something that's microwave-safe and that can hold the bacon up out of it's own grease. Duh!
Looking around the kitchen I found a Pyrex bowl and thought "a-HA!"
So here you have it. I cooked a whole pound of bacon at once and it turned out great!
(BTW this is my first Instructable. Hope you like it.)
The bowl sides need to be high enough to hold the bacon up out of it's own grease when it starts to shrink.
The plate needs to be larger than the bowl in diameter so it'll catch the grease dripping off the bacon.
I spread paper towels under the plate to catch any grease that might miss the plate - but there wasn't any. YMMV