Basket and glasses: what they have in common

1. Step 1. Basket — is made of — Plant fibre. Grasses and bast fibres were also used for weaving.
2. Step 2. Plant fibre — is material for — Toothbrush. The bristles were hog hair, later nylon.
3. Step 3. Toothbrush — is made of — Bone. Addis’s toothbrush has a bone handle.
4. Step 4. Bone — is material for — Spectacle frame. The first frames were made of bone and horn.
5. Step 5. Spectacle frame — is part of — Glasses. A frame.

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