Memory challenges for the guests in a radio show

Hi!

I need your help (imagination) to think about some easy memory challenges for the guests of a radio programme. They are not trained people so the test has to be not too difficult.

Obviously they will have to memorize random decimals, random binaries, random words (concrete, abstract, the usual grocery list, etc.), dates, maybe a list of names, colors…

Any idea? Note that for people listening from home or car there’s no image, only sound.

By the way do you know any radio programme or podcast with a section about memory (I can understand English, Spanish, Italian, French or even Portuguese).

Thanks!!

For memory podcasts, check out Magnetic Memory Method and Master of Memory.