This really is the droid you're looking for. Sphero have developed this awesome BB-8 replica that's a lot more than a simple toy or collectable. You control it via your smartphone or tablet and it also features a clever hologram feature.
It looks and sounds just like the real thing.
Star Wars fans will love this, as well as anyone who appreciates a great gadget. It's a lot of fun and it should keep you entertained for hours.