I like when he does the "remember 5 words" part from the dementia test it's always things he can see right in front of him and are thematically related. First was "person woman man camera tv", with the first 3 being words for humans standing around him and the latter 2 being electronics set around him. The recent one was "hat hair logo white black" with every one of them being stuff he could see on people's heads (and I wouldn't be surprised if it was all from one person).

I bet if he said 5 words with no thematic connection like "corn hammer green desk rope" he wouldn't even be able to repeat them 3 seconds later.