I thought it would be fun to put together a series of effects processors and put it in a Electro-Harmonix Pedal Board with Bag. As Christmas gifts I got the bag, the TC Helicon Harmony Singer Vocal Effects Processor and the TC Electronic Guitar Ditto Looper Effects Pedal. I already had a four channel stereo Alesis mixer with on-board effects, a Boss CS-3 Compressor/Sustainer Pedal, a Danelectro DJ-14C Fish & Chips 7 Band EQ Mini Effects Pedal, and a Boss TU-3 US Chromatic Tuner, Convenient Pedal-Based w/21-segment LED meter. I added a power strip. The guitar inputs into the EQ then to the Looper, then to the Sustainer, then to the Harmony Singer, then to the tuner, then to the mixer which connects to the sound system. The microphone connects to the Harmony Singer, then to the mixer which connects to the sound system. The Harmony Singer functions much better when the guitar input is "leveled and smoothed out" with the Sustainer. This makes chord recognition better to trigger the additional vocal harmonies....
The finished product looks like this:

I spent the last six weeks getting used to turning on the harmony singer and the looper. That's why they are positioned to the far right so my right foot can control them. I will write additional posts describing what I've learned.