I use the droplet ShowSection with an added condition. It only shows on certain pages. It looks like this:
$ids2 = array(0,1,34,36,38); // show droplet only on pages with these ID's
if (in_array($page_id,$ids2))
{
echo("[[showsection?section=56]]"); // this is the section to show
}
I am no coder, and I have done this by trial and error (took me two hours of searching and trying, don't laugh...). But it works, so I'm very proud of myself LOL

I was wondering if someone with coding skills could take this idea and rework the conditon into some parameter for the droplet, or droplets in general, or some other neat idea to easily add conditions to showing stuff.