In short: implement the feature https://toolserver.org/~erwin85/randomarticle.php
Rationale: self-evident.
Implementation: probably a system message like [[MediaWiki:Sidebar]]; each bullet point would be a kind of task, with a title defined either on the page itself or by another system message, its sub-bullets would be category names; the special page picks N random pages from the defined categories for each kind of task and regenerates on refresh.
Open questions: whether to allow recursion (obviously preferred) or not; caching.
Version: master
Severity: enhancement