An alternative to Dogs Bollocks.

 

According to QI there are two terms which derived from Meccano sets.

Dogs Bollocks for Box deluxe

Bog Standard for Box standard

Now, had it been ‘standard box’ I’d have had to create another entry. Even so, I’ll have to do it now since I’ve used the phrase ‘standard box’ on this website and can now probably find it in a search.