In addition to hosting VirtualBox and KVM virtual machines and storing project data, Unix Tutorial Hardware Lab gives me plenty of ideas and opportunities for home automation, security research and cloud administration. It's also through this initiative that I am hosting a number of free access EC2 Linux environments for learning Unix and Linux basics in Unix Tutorial Facebook group.
What hardware do you have? What are you using it for?
If you ever have a question about any hardware or software from the list, please drop me a line and I'll do my best to investigate and to help out.