For somebody who is interested in home robotics space; what are more affordable products to get and possibly build upon ? I had some high hopes from the Anker g

For somebody who is interested in home robotics space; what are more affordable products to get and possibly build upon ? I had some high hopes from the Anker guys since they showed up at the Apple WWDC event, but nothing substantial since. I have been thinking of getting DJI tello edu drone to do some basic navigating or person following; does anybody have any experience/ideas here ?