Here's a collection of Celtic knotwork designs on business cards that you can personalize to suit yourself. You can add your own name, job title and contact information on the card's product page.
The cards come in packs of 100 and are available on a variety of card stocks. Prices will vary with your paper choice.
The art on these pages is copyrighted, at dates between 1997 and the present, by Bradley W. Schenck. This web site is entirely safe when used as directed. The large print giveth, and the small print taketh away. If you're reading this you are way, way too close and - possibly - you have too much time on your hands.