I'm running a cult event In a few weeks and I'm looking for some swim wear for the guys in the cult. Any ideas? Board shorts would be great but I can't seem to find any.

You could try the swimming trunks.

There's also goggles like the ghostly goggles of fear, and hardcore goggles.

the tweed shorts could probably pass as plaid swim trunks. there's always the female panties as speedos : D