I think every child should have one of these. It's not only fun to bounce around on, but it gets kids moving and they exercise without even realizing it! It helps kids with their balance and coordination, too. My girls each have one of these and we keep it in the house - they bounce all over and have a blast. Each one has a built-in handle grip for safety. They're available in different colors and in a couple of different sizes. The one pictured here is clear with different colored stars all around; this is the one my girls have.
Bouncing has many health benefits for kids and adults alike, such as improving the immune system. If you want to learn more, read about the benefits of bouncing/rebounding here.
This would make a great gift from grandparents!