Hey! I have a big infrastructure of about 100 servers. I can't spend more than a few hours to deploy some cool stuff and it's just for fun. My ideas are adding all of them to the TOR network or running a bitcoin miner (only CPU so extreme unprofitable)<p>Any other ideas?
What you and others said, you could also create multiple domains,trusts, set up GPOs for users and user accounts and have fun.<p>Of course you can always put them on eBay!