Consider day labor. There are employment agencies that specialize in this type of arrangement, and you can get paid at the end of the workday. The jobs you find through an agency can vary, but are usually in construction, factories, offices, and manufacturing. An alternative to finding day labor is to go where other day laborers meet (usually street corners or parking lots) and wait for employers (building contractors, landscapers, home owners and small business owners). If you go the non-agency route, you might get paid in cash. You can also check your local newspaper or internet classifieds to find quick labor gigs, like painting, mowing, or moving work. When considering a day labor opportunity, keep in mind that less formal arrangements could result in you not getting paid or worse, you getting injured without any kind of compensation.

Sell something. Dig out that old guitar you never play, those CDs you don't listen to anymore, or your antique toy collection. Go to the pawnshop, put an ad on local internet classifieds, or hold a yard sale in front of your house or on a busy street corner (just display the item with a big sign announcing the ridiculously low price). Price items at half of what somebody would be able to buy them for anywhere else, and you may be able to sell them within an hour or two. You can also sell items online at web sites like eBay, Amazon and Craig`s list.

Become a street performer. If you can dance, play music, or tell jokes, you can probably get some cash by performing in public. But don't do this unless you are actually good at it. Put together a good act and find a place to perform. Give people a dose of live entertainment, and hopefully they'll reward you with tips.