My cleaning method has always been to:
- use my fingers/tongue to get any food out
- swish some water around to grab the remaining bits
- drink it
I also almost always find myself wiping the plate or pot clean with whatever absorbent fabric is nearby. My crew always thought this method was 'perfect' because it didn't require extra tools or leave any odors floating around, but now that I'm reading these suggestions it seems like those nasty gulps might not be necessary!
There's always something new to learn. Thanks for posting this great question, @Nathan1!