Step 1: Extract Information from Passage.
The provided text indicates that long, pinnate coconut leaves serve as the primary material for manufacturing items like brooms and chatai.
Step 2: Discard Inapplicable Options.
- Bedding: Primarily fabricated from cotton, not coconut leaves.
- Footwear: Typically constructed from leather or rubber.
- Personal Hygiene Cloth: Made from fabric.
Step 3: Final Determination.
Consequently, the principal application of coconut leaves is in the production of brooms.
Final Answer: \[\boxed{\text{Coconut leaves are used to make brooms.}}\]