I'd say to just start off with a couple DC motors and a motor shield to controll them You can do most of what the other platforms offer on your own with minimal effort. You can print a fancy round frame for it if you really want one.
What are the engineering and design challenges in creating successful IoT devices? These devices are usually small, resource-constrained electronics designed to sense, collect, send, and/or interpret data. Some of the devices need to be smart enough to act upon data in real time, 24/7. Specifically the guests will discuss sensors, security, and lessons from IoT deployments.