I’m sure someone told me when I was quite young that it was just Welsh that had /ɬ/. Then I read about Zulu. Then I discovered that Icelandic has a word-final /ɬ/. Today I see that Liangshan Yi, which takes up a good chunk of the Unicode spec, has it as well.
The characters are pretty remarkable. They look as if they could be used as graphics, like the Unicode snowman.