Nice Halloween skull prop by forum user subrosa:

Here is one that I’ve been working on, it contains an 8mhz Trinket, 2x neopixel jewels and a bit of silicon wire.

The neck is hard drive platters, the sides are drive heads, and the top the motors. A little tubing helps even out the Giger-esq look. The skull is a candy dish from Amazon, and the “plate” is just a cut-up aluminum sign (cheap way to get thin aluminum sheets).

I’m still thinking of what to do with the base (from an old barcode scanner), but I might just cover it with fabric. I’m also working on what I want the eyes to “do”, but I omitted any sort of sensors as another box will most likely contain an AudioFX board and PIR sensor. My buddy said I should use a sonic sensor and have the eyes glow brighter as a subject approaches…maybe I need to build another.

HAPPY HALLOWEEN! Every day this month we’ll be bringing you ideas and projects for an Electronic Halloween! Expect wearables, hacks & mods, costumes and more here on the Adafruit blog! Working on a project for Halloween this year? Share it with us on Google+, in the comments below, the Adafruit forums, Facebook, or Twitter— we’d love to see what you’re up to and share it with the world (tag your posts #ElectronicHalloween). You can also send us a blog tip! Tune in to our live shows, Wearable Electronics with Becky Stern, 3D hangouts with Noe and Pedro, and Ask an Engineer, featuring store discount codes, ideas for projects, costumes, decorations, and more!