Tracy, fortunately for us this is an easy question, and fortunately for you too, since it means that you'll be able to find a replacement easily.
It sounds like you had a Melitta porcelain cone filter holder - a very simple and traditional way of making coffee.
You can find them in various sizes at many coffeeshops and cook's resource stores, including Fante's.
• Manual Drip Coffee at Fante's. Melitta cone filter holders are about $9.99.
Amazon also has a full set that includes paper filters and a coffeepot.
• Melitta Porcelain Manual Coffee Maker, $54.95
This was one method we never got to look at in-depth during Coffee Week. Do you use a Melitta cone, and if so, what do you like about it?
See all our posts on brewing coffee here.
Also, check out these Melitta porcelain filters on eBay.