Hey everyone. If you want a small project but you need more pins, space, etc., Use an ATmega1284p. They have 32 I/O pins, 128k of program flash, 2 UARTs, and a host of other features. Here is a great little board I built around it. It is low cost and minimalistic, and is ready to be utilized in your latest project. Check out the Kickstarter here: https://www.kickstarter.com/projects/663438947/mini-duino
I've been offering that in the DIP package for some time now - if you blow the chip, it can be easily replaced.
Other '1284P boards available also. And many custom designs that are not pictured. http://www.crossroadsfencing.com/BobuinoRev17/