Make the visit to an exhibition more fun for the kids (and their parents.)
Write secret facts and stories specifically for kids for specific exhibits. These are only visible to kids if they wear special glasses, or flash a special light around the exhibit and find these secret writings.
See the wonderful world of animals.
Publish photos and articles about strange new species discovered.
Get to pick the ones you like.
Publish regularly articles on foods that can help you lose weight.
Everywhere you read and hear (mostly) bad things foods can do to you.
A website publishing the benefits of foods (with some qualifying warning if some risks exist.)
There are many things to do as a tourist in a new city, from free to very pricey.
An app where you can check things to see and do around you, listed and categorized by their price.