Do you and the kids enjoy a good old fashioned treasure hunt?
Then get into Geocaching by downloading the app (free) and start looking for treasure. The kids love it as it's fun to search, figure out the clue, and discover new places. They actually get to find treasure trinkets and they can place their own trinkets in the cache!!
It's super easy to do. Use the app to find a cache close to you, read the description and clue, then go find it. It's fun to do when visiting places too. Amanda and I have done this in the Cayman islands when on holiday, and I've done a bunch in the United Arab Emirates. It's a great way to find cool locations while away on holiday.