These guys stock just about every cufflink available; classic, religious, military, exotic, functional, tuxedo, and tommy hilfiger cufflinks. Men are usually not very keen on accessorizing but the stuff here are self-selling and their informational blog post helps a lot.
The site is a bit clustered though and not very good to look at although I don’t find it too static. A little house cleaning and they will be okay.
There are offers for other accessories like belts and buckles, tie bars and tie clips and money clips.
They have free shipping on all orders and you can pay with your Visa or PayPal.