Hello forums! I recently started running my first campaign ever, and it's a pirate/ship travel campaign. I'd like to make a spider-themed island for my campaign. I'm thinking of it being filled with a cave system filled with, well, spiders, but that's a little lame. That's if nothing more creative comes to me, so I'm going to the forums for some cool ideas! I would prefer things that are silly and ridiculous, since that's how the campaign is so far. We have 5 level 4 players, so it should be something they can handle.
TL;DR: Need silly ideas for spider-themed island in pirate campaign, with 5 level 4 players!