—Simple module (you can make your self) with ESP32 micro controller inside. You can program it with arduino code and make it do what ever. It has WIFI on board so you can connect to your Amazon ECO or ALEXA and sequence a crazy light show. Or you can hack your Tesla with it and turn it into a Night Rider.
—Module that has 4 lasers sticking out of it, cuz lasers are fun.
—Vape module that makes fog
—GPS module; converts your GPS point location into CC parameter.
You can link it to volume of a track and when you move the track will fade in or out depending on your location.
—Module that has a tripod camera connector, so you can attach to a tripod.
—NFC module that triggers program changes when used with other NFC enabled objects.
—Video synth module with HDMI out
—Pneumatic sensor module. Blow pressure to after-touch. Attach a tube pipe to your module and have a MIDI clarinet !
—Transmitter module that has a wireless controller for a pocket operator. On the back of a pocket operator there are expansion connectors and you clip receiver on to them. So than you can sequence and control everything on pocket operator from op-z.
—Bluetooth audio in / out (I know there is a lag for live performance but its nice for playback).
—Guitar neck module. Ukulele like neck, sticks out the op-z with 4 strings going into the 4 holes on op-z. Strings are connected to vibration sensors inside the module. Now you have a MIDI ukulele !
—Module with IR sensor and transmitter. Sample your remote controls. and sequence you TV ! (or anything else that uses IR remote).
—Wireless charging module (can make your self).
—Module that adds even better kick stand, compatible with a tablet.
—Module that is a small pocket operator that acts like a nintendo controller. You can take the module out and give it to a friend and it will work as a wireless controller for op-z parameters. And its like supper cute, baby pocket operator