Sphero has more or less mimmicked that model with a smaller droid you can use in your home. BB-8 looks and acts just like the movie version, with the saucer hovering above the ball as it glides through your space.
A magnetic pull keeps it up top even as the roughly three-inch sphere rolls about, and the toy charges wirelessly via the included charging dock, which helpfully doubles as a display stand. Sphero says BB-8 can hold an hour-long charge.
Sphero's BB-8 is priced at US$150 (nearly £100), so if you're eager to adopt a tiny droid, consider setting an alarm now.