This great little notebook uses 3x5 cards for pages so that they are lined and sturdy, plus you don't have to cut them out, just fold! Check out the tutorial here.
This potato dish looks stunning and will definitely impress dinner guests, but it is surprisingly simple to make. Here is the recipe.
And lastly, another slightly more advanced instructable for a mini solar charger for USB devices that fits inside an Altoids tin. Here is the instructable.