From my own experience, I’ve used Textbroker to make quick cash for bills. They pay every week on Fridays and if you work a lot every day, you can usually have a substantial amount accumulated by the end of the week — definitely more than the $10 cash out threshold. The only bad thing there is you never know how much work they’ll have up to grab from the order board. But I would say that for me Textbroker has been an excellent source for getting bill money together when I need it quick. Amazon Mturk is another idea. You can cash out there at just $1 and it transfers to your bank account. There is an entire sub-forum about Mturk over at the Work Place Like Home forum where people discuss the best tasks to accept to make the most money. Mturk has a reputation for being just an extra money option, but I know for a fact there are some people making more than just extra money over there.
The online application process for these jobs—or perhaps “gigs” is the better word, since they're all for independent contractors—is pretty simple and straightforward with very little required of candidates. Some of these opportunities—like the micro-jobs—you could very well apply and start the same day. And these jobs require very little commitment and can typically be done on your own schedule.