What company should I use my server for?

I have a very powerful rack server and I am interested in sending it to a colocation and using it to start a new business. I am looking for good business ideas. I would like to spend under $3k on getting it up and running and i also have lots of time on my hand. Please let me know on any good ideas you have or who i should talk to. Thanks

Put it in colo, set up whm and sell hosting. If you don't have any experience though you might want to post on the JV section and team up with someone because there are a lot of pitfalls to avoid.