WORD SPIRAL

Starting from 1, fill in the grid clockwise with four-letter words. The last letter of each word becomes the first letter of the next to reveal a tool type.

1. Of the Isle of Man 2. Christmas, informally 3. Fly high 4. Occurring very infrequently 5. Peepers 6. Rescue 7. Consumes food 8. Appear 9. Postal system 10. Citrus fruit 11. Engrave 12. Opposite of low 13. Optimism 14. Finishes 15. Rebuff 16. Grain husks