If you're looking for hardware to augment your pocket operator's functionality you've come to the right place. You can use these devices to do more with your pocket operator, get more interesting sounds, and work more efficiently.
p0k3t0's Sync Splitters for Pocket Operator
The p0k3t0 splitter fixes the problems caused by chaining multiple pocket operators. It creates a signal flow from one source to multiple devices in parallel to help you link your Pocket Operators together better.
Buy them at Tindie.