consider shopping at Fine and Dandy, an online store specializing in accessories for the modern dandy. Categories of goods include ascots, sock garters, handkerchiefs, money clips and...flasks. As far as I can see, everything, including leather portfolios from Paraguay, costs below $50. I don't know what it would mean, but the site also apparently stocks tartan scarves "authenticated by the Scottish Tartans Society."
Pictures from the shop's 2009 lookbook, marking the store's one year anniversary:
More info can be found on the shop's blog.