I only recently acquired one of these, and I honestly had no idea how useful it would be. I use it for measuring everythign when I am baking or cooking recipes that require exact measurements (although admittedly, this doesn't happen often as you will know if you have read any of my recipe blogs!).
Since these aren't common in kitchens yet, they are the perfect gift for any foodies in your life. Anyone that loves cooking will appreciate a digital measuring spoon to make their life easier.