If you find that "incentivizing" your child has become a staple of your parenting approach, you might want to look into geocaching.
Geocaching uses handheld GPS units to find hidden "caches" in your neighborhood or out on the trails. If you create an account on Geocaching.com, you can download an app and your phone serves as the GPS unit.
Once you're set up, you're ready to find some treasure or caches. Caches are containers of all sizes that may be camouflaged to blend into their surroundings. They may be hidden under a rock, behind a tree or maybe even in a more urban setting. Inside the cache, there may be a logbook to sign or even an inexpensive toy or trinkets for trade.
Caches are hidden all over the world by fellow geocachers. Some are easy to find while others may require a long hike, so check the difficulty and terrain ratings on the web page before you go. A "1 star" difficulty and terrain rating are just about right for a young child.
Geocaching.com lists more than 2.1 million active geocaches worldwide, so chances are excellent there will be several near you.