What's the best time of year when you have twins, triplets or other multiples? Summer, of course! But keeping your multiples busy during the summer months can be a challenge for parents, especially when you're watching your budget. The cost of attending camps, movies, amusement parks or water parks can be prohibitive when you're paying admission for multiple children. Instead, create your own fun with these Top Ten Free -- or next-to-nothing -- Activities, perfect for summertime!

What's your favorite summer activity? Click on the "Comments" link below to share it with us.