So I was chatting with Sean and Alex last night about projects we could do for Halloween this year.
Last year's extreme pumpkin carving was pretty cool. Apparently because of the flooding pumpkins may be a bit pricey this year, but I'm up for doing them again this year anyway.
We were also brainstorming about a small soldering project to be done jointly with the Scouts, and we're going to prototype a small variable speed blinker that could be soldered up on a small piece of perfboard and worn over a costume to make the wearer more visible when out in the dark. We're shooting for a target price per set of $5 or so when we order parts in quantity.
So far the plan looks like to build a board with a couple of 555 timers and some trimpots that could adjust the speed and fade time for several LEDs. We haven't settled on single RGB LEDs or clusters of individual color.
Post more ideas or good parts you find in this thread.