Well my first idea. Make an Axon shipping system in your garage to automate online orders and plop boxes into a bin for UPS to pickup every day
Make a home made HVAC/ home automation system. The axon is over kill but should be powerful enough to receive a command and turn on and off lights.
Or make a massive mobile platform with LOTS of processing power. using some elaborate sensor array to map a room to the mm.
Or make a 3 foot tall humanoid that has really cool dance moves using all the axons to process the algorithm to move the servos.
if your really interested I can come up with about a hundred more crazy ideas
I'll post any really cool ones I think up in the next couple of days