The Sack-O-Duino is a minimalist Arduino implementation. The kit comes with exactly the components necessary to get a blinking LED sketch working, and no more. This is great for integrating an Arduino project with a breadboard. It's also the cheapest Arduino clone that we know of, so you no longer have to tear apart old projects to afford a new one.
To use the Sack-O-Duino, just plug it into a breadboard and start writing your sketch. The Arduino bootloader comes preloaded on the ATMega, so you can program it with a standard FTDI cable. The image below shows how to connect all of the components together to get your Arduino working.