The German manufacturer Denicotea makes items for pipe and cigarette smokers. You will for instance find kits to maintain your pipe (wax for the stem and for briar) as well as cristal filters. These are suitable for all pipes since you can put them at the bottom of your pipe's bowl before packing it with tobacco. Denicotea filters will get rid of some of the nicotine and tars, while abosrbing the excess moisture. Get yourself a Denicotea accessory to improve your smoking experience!