While you'll most likely find all the tools you need to make most of the recipes on this site in your kitchen already, there are a few things that'll make your life much easier if you plan to make these recipes often.
Mini Measuring Glass (click here for sample)
Makes it easier to accurately measure small amounts of liquids
Micro Measuring Spoon Set (click here for sample)
Most measuring-spoon sets only go down to 1/8 tsp; a set like this, which also includes 1/16, 1/32, and 1/64 sizes, will be helpful.
Small Bowl Set (click here for sample)
Why dirty a big bowl when a small one will do? I typically use my daughter's toss-away toddler snack containers--they're a perfect size! Custard cups also work well.
For just a dusting of flavorings like butter, almond, and vanilla extract--in these recipes, sometimes a drop is too much!