Children's Projects w/ Technology
It suggests this for to-do lists but I also think it would be cool for the times where kids are "bored" or don't know what to do with themselves. Have a bunch of QR codes with activities and have them scan them. For tech nerds of course...
12 Junk Drawer Gadget and Doodad Projects. Great science and tech projects to do with the kids when you're cooped up inside (via how stuff works)
Geek dad : awesomely geeky projects and activities for dads and kids to share / Ken Denmead ~ Today's generation of dads grew up more tech-savvy than ever. Rather than joining the Little League team, many grew up playing computer games, Dungeons and Dragons, and watching Star Wars. Now with kids of their own, these dads are looking for fresh ways to share their love of science & technology, and help their kids develop a passion for discovery. Also recommended for Geek Moms and Geek Grandmoms.