The ‘Interactive Family Tree’:
https://www.gramps-project.org/wiki/index.php/Addon:Interactive_Family_Tree
is fun. The way it rearranges itself as you click on each person is a definite 'Wow" for the casually interested.
The ‘Dynamic Web’ report is also comprehensive and includes ‘coloured pictures’ (i.e. trees) that should impress the casual reader :
https://gramps-project.org/wiki/index.php/Addon:DynamicWeb_report
NB there is also a ‘Dynamic Web B’ report in development, which considerably enhances this current Dynamic Web report. It’s not ready yet but it is very promising. See this topic: