Speaking of GPS coordinates:
The first year my girls got smart phones the Easter Egg Hunt had GPS number in each egg. They had to figure out the location of their hidden "Easter Baskets" by the GPS location. They finally figured it out that the Baskets were at Grandparents house 😆
Last year they made a hunt for wife and I. Boy did they get us back. They mad a crossword puzzle and a Jumble to figure out. We did it. Or I should say my wife figured most of it out. We actually had a good time. We thought we were bad having a few dozen eggs hidden. They they way more eggs hidden with clues in each. I think it took us 1-1/2 hours just to find the eggs!
We started our girls on these twister Easter Egg Hunts when they were toddles and each year we came up with something harder then the last year.