They let me loose in the Maker Shed, so I grabbed a tinyCylon kit, built it, and embedded it in a busted Nerf gun! Please enjoy the video, and watch out for the noisy lamp.
To modify the kit for flexibility, I soldered the LEDs in at full height; you could extend things further by adding some wire between the switch and board, or make an extension for the battery pack. I’d love to hear about other kit modifications people have done.
These kits are great for adding effects to props and costumes. For more details on building the kit, check out Marc de Vinck’s excellent build notes here.