Plectranthus barbatus grows to its full height in 1-2 months from a cutting and the cutting itself costs around 50 Kenyan shillings ($0.37).

“The leaves are similar in size to an industrial toilet paper square, making them suitable for use in modern flush toilets or for composting in latrines,” says Odhiambo.

They emit a minty, lemony fragrance. Covered in tiny hairs, the leaves have a soft texture.

Sounds comfy

Edit: but nothing beats a bidet