So you want to sit on your hoverboard to get around? HoverSeat with Handles has you covered. It lets you use your hoverboard in a safer fashion. It is easy to set up and allows you to attach your beach chair and carry things with you. With handles, you can operate your device by hands. This makes it easier for small kids to operate a hoverboard.
You just have to press handles forward to move forward and backward to stop. More information is available here.