(1) Another vote for Sphero. I bought Sprk+. I like seeing the innards and doing the simple blocky programming to make it move around the floor. {Hey you can ev

(1) Another vote for Sphero. I bought Sprk+. I like seeing the innards and doing the simple blocky programming to make it move around the floor. {Hey you can even look at the C code behind the blocks.) It needs a mobile phone with Bluetooth. There are some example programs already written that allow you to get it moving from the get-go. (2) Has anyone tried Piper Computer Kit? Would like to know pros & cons. I have never got into minecraft? {Please don't hate me for this.) Is it hard? Am I just too lazy, or is it that I prefer chess? I'm a teacher. No kids myself, but I like to try out and introduce STEM toys to my class.