I just bought my 1st odd-ball
a gadget, or a music instrument / midicontroller
after 2 years I decided to buy one, found it second hand and if I like it, I will buy 3
Oddballism video:
https://www.youtube.com/watch?v=K-R4cVWIifA
me juggling normal juggling balls 
https://www.youtube.com/watch?v=vTYaRVU1bYY
Never seen this before. Mental. Looks like a lot of fun and I did used to love juggling. Would be interested to know how you get on with it…is it more gimmick than gadget???
big chance this thing makes no sense, just a gadget. But who knows?
Another way is to use bouncing balles and membrane-sensors on an Arduino.
Arduino can be connected to my multi-map-mode of my Analog Four.
That sounds pretty doable but I’m sure the odd-ball will be way more streamlined. It has a lot of potential to be manipulated in strange ways. Just looks like fun tho!