Throw the cylinder over the edge of a convenient precipice. When it reaches the end of the cord, the plunger pulls the grounds through the hot water. Retrieve the cylinder. Open. Pour. Enjoy.-- lingamish, May 17 2007 sounds like almost as fun to watch as my mom's old perculator. I recently found it in her kitchen going over her stuff. When I was a kid I spent whole meals fascinated with it.-- pashute, Jul 11 2021 I hope the packaging includes a precipice, for times when there isn't one handy.-- pocmloc, Jul 12 2021 For those situations where no precipice is handy, you could perhaps repurpose as a swingball / tetherball cafetière.-- calum, Jul 12 2021 Bullroarer!-- pocmloc, Jul 12 2021 ^ Sound gravity, that. Plus the tether can always be released for that extra kick.-- wjt, Jul 17 2021 This is completely sensible.-- RayfordSteele, Jul 18 2021 random, halfbakery