Save pits and seeds for planting
Avocados: This is a fun activity for kids to watch the avo pit grow. Do quite a few as not all will survive.
https://www.homestolove.com.au/grow-an-avocado-from-seed-10585
Nectarines/peaches: these are also very fun to watch grow!
https://www.attainable-sustainable.net/nectarine/
Papayas: what a delicious fruit!
https://myplantin.com/blog/how-to-grow-papaya-tree-from-seed
Google (use ecosia) to find out other fruits from your area and how to grow them
have fun!