Bard Builds?

So i was wondering what type of bard builds can be made. Usually when i go bard i play the normal support tank and build w/e tanky against whatever the enemy team has. For example, if they've got lots of ad and little ap i'd go for solari, upgraded sightstone, (usually sell the supp item around mid-late game or go for the cdr on eye of the watchers ) either more armor and cdr (frozen heart) or hp and armor (randiuns). For the more mr centered build, i'd go for banshees, stick with solari or get banner if we need the lane pressure (which we usually do).

I'm interested in some experimental builds that are more dmg based. What would make bard an annoying supp? i'm placed in pretty low elo so i've had lots of chances to troll and carry as bard but stick with the faithful tanky/supp build. But just in the case of me going ham with bard, what would be some nice builds to try out? full ap bard? full ad bard? static shiv and rapid firecannon? lichbane + protobelt? Just some stuff that takes into consideration his passive and full kit. Just wonderin...

Ttdr: What would you suggest for some dmg based builds for bard that fully uses his kit. specifically his passive.