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Coco soap

In areas where the coconut tree (Cocos nucifera) grows, it is possible to produce a soap made out of it.

• Medium
• 4 day(s)

Solar Oven (box-type oven)

Box or a parable shaped, the solar oven makes it possible to cook your food using the sun rays.

• Easy
• 1 day(s)

Ceramic water filter

A ceramic water filter is a system for purifying unsanitary water. This tutorial aims to show how a ceramic water filter works and how to build one on a semi-industrial scale.

• Hard
• 3 day(s)

Multifunctional Crankset

A bicycle crankset that can power multiple tools such as a blender, a drill press, a sewing machine or even an electric generator.

• Medium
• 2 day(s)

Low-tech Computer

A basic computer model that still meets most of our daily needs. All for a price not exceeding 30 euros!

• Medium
• 1 day(s)

The Norwegian Kettle (Hay Box)

The Norwegian Kettle allows for an extended period of passive cooking without supplying heat.

• Easy
• 1 hour(s)

Parabolic solar cooker

The parabolic or concentrated oven consists of a parabolic-shaped reflector. Its shiny mirror-effect surface captures the sun's rays, concentrates them, and then reflects them onto the cooking surface located on the grid.

• Medium
• 3 hour(s)

Lacto-Fermented Preserves

Preserve your raw vegetables for months with this lacto-fermentation technique.

• Easy
• 30 minute(s)

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