I planned in 2017 to reuse the same scavenger hunt, and I was HORRIFIED when I realized they remembered the whole plan. They knew the first couple of clues and the last couple of clues. They remembered where the Easter baskets had been.
So in 2019, there were 2 scavenger hunts, one without words for my daughter who was struggling to learn to read, and one for my teen who could handle much more difficult clues and tasks.