The easiest way I found to create A Memory Palace On The Fly is to use The Body System.
It can be used without notes to memorise any kind of data such as the main points of the podcast, phone number, definitions etc.
How it works is that you choose the body of the person you are talking to and use that as the memory palace for attaching the information. You can of course choose any person that you know well also.
When you think of a body of a person, starting with the Head & Hair, Face with Eyes, Nose, Mouth, Chin, Neck, Shoulder Left and Shoulder Right, Chest, Stomach, Hip, Torso, Leg left, Leg right, Foot left & Foot right, all could be the locations and the Trigger items for the data you attach. Total of 17 locations here. You can shorten to 10 locations or create more locations by adding more items to it such Left eye, Right eye, etc.
Attach the info to the locations using the link-action. So if your first info was let’s say Milk, then you simply Pour Milk over the Head-Hair of the Person. And so on with the rest of the body parts.
I have explained how I use it here on this link;
Hope this helps.