Valentine's Day probably isn't the time to let your inner geek run wild, but if your sweetheart appreciates a handcrafted gift, the LED Flashing Sweetheart Kit might be right. All you need is a soldering iron to assemble the 28 LEDs (love-emitting diodes?), two transistors, two capacitors, nine resistors, circuit board, and 9-volt battery holder into a crude blinking heart. Okay, if the box of chocolates or dozen roses seems too passé to you, I'm not sure if the Sweetheart Kit should be your first fallback, but if she's got a soft spot for craftsmen with some soldering skills, give it a thought.
My techie Valentine, via CNet