Lunes

I’m searching for pipes, or foils to make pipes of, or similar. I need it to burn as clean as possible without any residue left behind. I know I could use roller paper to make the pipe, but i need the tubing to be stronger and more water resistent. I read that celluloid, the first ”plastic”, burns completely without any residue. But it seem to be impossible to find any of this material as pipes or similar, I can only find ping-pong balls and old toys made of it. I can’t make any pipes out of that. What’s my best option that I can get my hands on?

I’m searching for solid materials that don’t left residue when burning, or left a very small amount of it. Any suggestions on such materials?