A fun activity to do with your kids is bird watching! You can make your own bird feeder just by using an empty toilet paper roll or paper towel roll.
All you need to do is cover the cardboard tube with peanut butter then roll it in seeds.
You can buy bird feed mix at almost any store. Just roll the tube around so it covers all the peanut butter.
Use a piece of twine and hang it up on a tree outside! Preferably somewhere the kids can see if any birds land on it!