https://www.amazon.com/gp/product/B08GFP77MQ/

https://www.amazon.com/AeroPress-Coffee-Espresso-Maker-Bitterness/dp/B000GXZ2GS/

https://www.amazon.com/dp/B08FFWC57N/

Not the "cheapest" but certainly one of the best solutions, in my opinion. There is literally no faster way to cook, boil water, etc. Use any cutting board or a piece of wood as your "kitchen counter". Soups, stews, beans, rice, pasta, ramen, oatmeal, hot coffee, tea, etc. are a breeze with one of these. I haven't tried it yet, but I hear you can actually bake things inside the pot by using it as a steamer. Add your favorite coffee beans and enjoy perfect coffee from "Cafe Prius" - anywhere, anytime... 👍