I have used the Aquadoodle with both of my kids and both of them loved it, especially when they were younger. If you are looking for something that your kids can do for fun, that won't leave a big mess and will keep them busy this is it. The Aquadoodle comes with a great little water pen. You unscrew the top and fill it up. It has a spongy tip so the water comes out easily and smoothly. It won't let a lot of water come pouring out at one time. It's easy for kids to control and work. Once it runs out you can just keep filling it up again. There are also other little tools that you can buy that go with the Aquadoodle and make more fun. This is great to bring along while traveling somewhere or just to use in your own home. Aquadoodle has come out with a lot more products then they had when my kids were little and they are a good brand to go with. Give Aquadoodle a try. It's easy, fun and brings smiles to the little ones!