Now, this may not be a project for the woodworking novice and it does require a number of tools, but Chris, over at ManMade, put together a thorough tutorial on how to build your very own slat bench. As Chris points out in his post, the beauty of the slat design is that you can purchase the wood already cut to size, taking some of the work out of the equation. Plus, one of the great aspects of building your own slat bench is that you can make it any size you want.
Check out all the details, along with a thorough tutorial, at ManMade | How to: Make a DIY George Nelson-Inspired Outdoor Slat Bench. Images: ManMade