'Miscellany' means 'miscellaneous items', so is right here. 'Miscellaneous' on its own is short for 'the miscellaneous'/'all that's miscellaneous', i.e. more like an indeterminate amount described using the adjective, which is right for the M&M forum.
Classifieds has gained a "Miscellany" section.
"Clothing and components" has now had miscellany removed from the title.