Ties are cheap. Look around in the WAYRN thread, style blogs, etc.; then just get a bunch from B&S and such. Really good way to add diversity and color to an otherwise simple wardrobe. Once you know what you like to actually wear (as opposed to like the look of on others - not always the same), then get some really nice expensive ones, and resell the ones you don't like. Plus you may find once you've tried more that they don't really fit in your casual aesthetic. I feel like there are some good Fuuma posts on the topic of ties in casual that I'd like to cite here. Edit: now if you're going for conservative/business rather than casual, burgundy would definitely be your biggest hole to fill, like DocHolliday said below.