LEXIGRAPHIC IRREGULARS
Yes, there are two "c's", so there is a penultimate "c" (the first one):
bric-a-brac
1840, from obsolete Fr. phrase à bric et à brac "at random, any old way."
I thought this phrase was related to frilly, ornamental lace, and therefore was related to frilly excesses.
The dictionary I checked says it largely refers to ... random chochky of all varieties.
Also, "Pejorative term for Renaissance Revival buildings based on French precedents and overloaded with busy ornament."