I’m going to further the idea: we need not only demo wikis on your resource, but also an installation and configuration wizard in the wiki itself, which will initially offer one of the prepared options (Wiki Templates) for the wiki to choose from.
By selecting the desired wiki template, the user gets the appearance of the wiki, the necessary applications and extensions, sample user groups, wiki template structure, the rights of groups and pages, if possible at this stage, etc.
P.S.
I also saw an interesting version of a remote builder (constructor) of firmware for a Wi-Fi module ESP on the site. The customer chooses which configuration he needs, pays a nominal fee and gets access to download the firmware.
Perhaps this option will appear and you!