Sit down at a table with your notebook computer or an iPad. Let a person with dementia watch you, ask questions, provide information. Try to incorporate some of their questions or information into a SIMPLE map.
Make sure your map is bright and you use pictures. You might even paste a picture of the person you are demonstrating the method to into the map. Keep the mind map SIMPLE and BRIEF
If possible, print the map in color and give it to your (new) mind mapping buddy.
Here are a few topics that you could use. You can think of many others for specific individuals.
On of the joys of making mind maps that get posted on Twitter is that you get to combine 140 characters with a map that can poke fun at some bozo in the US Congress or point flame at assholes violating human rights or making a point by joking around about something that is really dumb.
Doing so in a mind map is like drawing a political cartoon for someone like me who is artistically challenged not to mention “losing” the ability to be verbally quick.
My favorite targets include just about any current or past POTUS or member of congress, political candidate especially The Donald, US College sports teams that pay their coaches $10M per year and their players nothing, because the players as supposed to be getting their classes that they never go to and the degree they never earn as payment. I like to clobber current events, research, and public programs (or the lack thereof) that are just plain silly.
One of the basic needs for humans is communication. Express yourself.
What happens when one or more of the basic tools of communicating (memory, speech, writing, vocabulary) goes down. You adjust. Express yourself and you feel better, live better, and help others live better. Worth a few hours to learn how to do this in many ways.