Nothing says love like the willingness to give to your partner one of your organs and/or all of your blood. And while taking out your own kidney or presenting her with a jar full of your blood might seem like a romantic gesture, it's pretty high on the gross out factor. Why not give the gift that expresses your willingness without the need for needles, surgery or organ failure? Plus if you find out your blood types are incompatible you come out looking like a rockstar without needing to go under the knife. Sweet!

The kit comes with everything you need to test your own blood type—just add a few drops of your blood and some water and in a matter of minutes you'll know whether your types are compatible, plus a laminating sheet so you can carry your results around with you—never know that might come in handy. A perfect gift for Valentine's Day because nothing says romance quite like spilling your own blood.

DIY Blood Typing Test Kit [Thinkgeek]