Just found a well done article about how to build a sawdust toilet...complete with photos. This article will show you how to build a composting toilet like we use on our homestead. It works great! To find the info do a web search of "Sustainable Urban Living". If you have to have something immediately you can go to the vendors section and get Cabella's web address. They have a clip on toilet seat that works with any 5 gallon plastic bucket for $15. It won't be as comfortable or last as long as the toilet seat arrangement you build for yourself. Jack