In the past couple of months, we have covered a bunch of cool educational robots you can buy to learn more about robots and coding. You could always build your own though. teknik55 has posted a video on YouTube that shows a custom bomb disposal robot at work:
The developer used a 6-axis robotic arm, laser & camera systems, a drill, and a few other parts to complete this project. It is possible to use FPV glasses to better control this robot. More information is available here.