Template:Cl
Collapsable List template is a hack of Collapsable Gallery template, which was, in turn, stolen from Encyclopaeophiles Dramatica.
Doesn't work yet, still tinkering
Use: {{Cl|UniqueListName (nospaces, unique to the page) |* list item |** sublist item ** sublist item ** sublist item }}
{{#addscript: src=/collapsible|pos=head|type=js}} {{{2}}}
{{{3}}}