Eye of newt, toe of frog, and wool of bat are just archaic terms for mustard seed, buttercup, and holly leaves.
100 Mind-Blowing Wool Facts
Sheep at the White House. American President Woodrow Wilson and his wife Edith kept sheep at the White House during World War One to keep the lawn neat and reduce gardening costs. The sheep’s wool was also auctioned off to raise money for the Red Cross.