The way my mind works, I see or read something and it triggers an idea.

A year or two ago, I came up with an idea for an adventure setting/locale/module, The Isle of Wights. Quite obviously appropriated from the Isle of Wight. I haven’t done more than think about this, but it’s on my list of future projects.  If you think about it, use the name of any monster and pair it with Isle, Tower, Pit, or other noun and you have a module name.

Plenty of barrows, tombs, and catacombs would be needed, and shipwreck survivors, or the unwitting making landfall for provisions, would add to the supply of wights.

In addition, who says that the only undead on the island are wights? All many of undead and creeping and slimy things that are at home in a tomb or cemetery would be found there.

As per the AD&D Monster Manual, liches look like wights or mummies, and wraiths resemble wights.

Any adventurers who end up on this island without silver or magic weapons, holy water, and at least one cleric (of sufficiently high level), would not last long. Of course a few powerful wizards would come in handy.