Is there any interest in designing a FC ash catcher? I think an inverted turbine perk may create a cool tornado effect without excessive diffusion. Like this one with a turbine instead of a honeycomb.
http://m.dhgate.com/product/18-8mm-honeycomb-smoking-water-glass-percolator/175901652.html#pd-019
I also think a proper recycling AC would be popular. Maybe an improvement on this design.
http://m.dhgate.com/product/glass-water-pipe-classified-glass-bong-diffuser/208988186.html#pd-019
We could even design a Jhook to package with the AC and a keck clip.
http://m.dhgate.com/product/18-8mm-honeycomb-smoking-water-glass-percolator/175901652.html#pd-019
I also think a proper recycling AC would be popular. Maybe an improvement on this design.
http://m.dhgate.com/product/glass-water-pipe-classified-glass-bong-diffuser/208988186.html#pd-019
We could even design a Jhook to package with the AC and a keck clip.