There are three in all: a sound-activated jack-o-lantern light, a "creepy portrait" that moves when someone walks by and Halloween "stick figure costume." All of them are cute, but they're also a little less than what they seem.
The stick figure "costume," for instance, is a pack with battery, power, pulse and light-were modules that can be used to sew a glowing stick-figure into clothing, but doesn't actually come with anything to wear. Likewise, the "hack-o-lantern" and portrait packs seem to only have the modules needed to build the projects, but not the requires pumpkin or wall-art to complete the effect.
Naturally, there's some assembly required, but the projects do look pretty fun. Want to get started? LittleBits' Halloween packs can be had for between $29 and $65, depending on the kit.