There is some interesting stuff you can do with the sides/edge of the microwave being hotter than the middle, along with manipulating the power level of the microwave and moisture. Warming up a plate of food, but keeping the centre of the plate empty, while lowering the power level, can allow for much more even heating and cooking of food. Another example, putting a damp paper towel that has been wrung out and unfolded over the food in the microwave can allow for some interesting things, like warming up or cooking food while keeping it crispy or of the right texture, instead of it ending up as a soggy microwave meal. That, or using a microwave cover and a small bowl of water, which is way more practical then the paper towel solution.

You also get steamers that work in the microwave decently, not the best though, because the food gets steamed and microwaved at the same time. It’s passable.