Good Things Come in Threes

Insert the same letter into each word in a set to create three new words. None of the added letters is an 'S'.

EXAMPLE: CORE BUSY USER — Add an H to each word to get CHORE BUSHY USHER.

When finished, unscramble the six added letters to form a final word. The final word can be used as a promo code for 10% off a puzzle room experience. The code is valid until June 1, 2023.