If you find yourself short of those little essential accessories, the Fine and Dandy Shop might be a good place to look. Although you probably have to be in the US or Canada to order (but if you ask nicely, you never know).
It's full of those bits and pieces you probably can't find on your local high street – cravats, tie pins and clips, money clips, pocket squares, you know the kind of thing. And while there's not likely to be huge demand for sock garters, you can even pick up some of those too…just in case.
Check out the site and see what you think and if you know of a UK-based equivalent, let us know via the comment box.