Living on a tight budget is hard. We try to make it easier by finding cheap or free things to do with our boys. They are age 5 and 3. I have found all kinds of free museums and parks to explore. We also visit the local McDonald's to play in their indoor play place when the weather is bad or it's too hot to play outside.
There is a park in our town that has those water sprinkler things that sprout from the ground, and the kids can catch the water and play in it to cool off. All of these things are free and we get the boys out and they are entertained at the same time. I hope these tips will help you save some money and entertain your kids.