I can’t take credit for this, as I found it in a comment in a similar post and want to give that guy his props. It’s a microwave sandwich grill press. It’s inexpensive, and I use it all the time, especially when I want something, but I don’t want anything big or heavy. I microwave grill a sandwich, and it’s fantastic!

I was skeptical about how it would work, but it does. This is the Amazon link to it.