"People who provide food and warmth to piskies could be rewarded with good fortune or even their help with their chores (but only if they respected the privacy of the pisky!) Tales tell of piskies who took vengeance on the rich when they exploited the poor. Other pisky tricks included making noises and hiding household objects. In the past, people worried that their child might be taken "kidnapped by the fairies". Beautiful children were supposed to be the most succeptible and were said to be swapped with a "faery changeling" (an ugly fairy child). A lot of protection magic related to this fear. This pisky has a bit of iron next to him (just in case!)"
At the Museum of Witchcraft in Boscastle, Cornwall - May 2018.