Holiday Lights! is a set of soldering kits made by Digistump and sold via Kickstarter in December 2016: https://www.kickstarter.com/projects/digistump/holiday-lights-interactive-kits-delivered-for-the/
The following resources are to help you build and use your kits:
TUTORIAL: Assembly of your kits
TUTORIAL: Using the Holiday Lights Web App
TUTORIAL: Using an Oak with your Holiday Lights!