vowel harmony extension?

Vowel harmony in Turkish is way cool.

But I got to wondering, is there any such thing as *consonant* harmony in
any language?  I dunno, maybe a word would only have all palatals, all
labials, etc.  Or go the other way and words would only have all
fricatives, nasals, etc.

Does this exist anywhere?  Or are there phonetic/speech-production/???
reasons it probably wouldn't exist?  Because if not, I think I'll try it
out sometime.  :-)

YHL