1½ Cubit copper rings on stove burners.
A small ring around coaxial cable for satellite reception helps preventing micro-wave interferences.
A small or medium ring can be used to clean-up a crystal from negative energies.
A large ring around a humidifier improves the quality of the air. A medium ring can be used to re-structure water used for watering plants.
A small ring can be used to restructure the water circulating in a water fountain.
A small ring on garden hose improves the quality of the water for gardening.
A 2 cubit ring below a cactus pot helps the plant growing.
A medium ring under a tea-pot improves the taste of tea.
A large ring on a pyramid standing above a bed.
A small ring in conjuction with an Acu-Vac coil and a feedback loop around a water glass "super-potentize" the water.
An array of 11 3½ cubits rings assembled in a "tree of life" pattern with feedback loop and an acuvac coil; the assembly is ~6' by 4'. It can be hung horizontal above a bed to improve well-being.