Cooking and cleanup

Give me your easiest cleanup and most lightweight cooking methods. Not interested in cold soaking.

I’ve heard cook in your pot, only boil water in your pot and use a bag with insulated bag, carry a tiny piece of dish sponge for cleanup, use a bandana for cleanup.

I’ve been getting some good ideas on various topics from others sharing in this group so wondering if anyone has any creative ideas I haven’t thought of or heard before.