How to monitize my extra computer?

I don't tend to really think about it, tucked away in the corner of my office, but I have an extra computer sitting there that while not impressive in any performance sense, is still a competent computer that is just sitting there doing nothing. So I ask, can anyone think of anything I can do with the computer that can just be automated or left running to make money, or than the power costs? If it only made 5$ a day I'd be happy with it, but I just don't have any good ideas of things I know are working still these days that doesn't involve buying expensive software or brings in enough money to cover the power.


Any ideas?

Bitcoin Mining, bots of some sorts, SEO jobs with Scrapebox as the only application ever running on that computer, use it as a hosting server.

All I can think of.

Unfortunately bitcoin mining on that comp wouldn't be worth the electricity costs...however I own over 1000 websites...so the website version=free cash Thank you for the suggestion.

I would love using it as a server, but its not an impressive computer and not large enough to really rent for anything unfortunately. I also don't use scrape box at the moment, though I may have to consider doing it at some point. It's mostly a matter of not wanting to have my hands on it. Anyone know of any pay to surf sites that don't rip off their customers every time?