Sibling Teamwork and the Great Spider Prank

How a KiwiCo crate taught my kids patience, basic wiring, and the unfortunate reality that Dad is entirely un-scareable.

Keeping two energetic boys occupied while juggling a UI design degree, a creative studio, and the day-to-day chaos of a house full of pets isn't exactly a walk in the park. My go-to strategy lately has been channeling that endless energy into hands-on building projects.

Last weekend, we decided to tackle the Motion-Sensing Spider from KiwiCo's Tinker Crate line. Now, Tinker Crates are generally geared towards slightly older kids who are ready to dive into the deep end of STEM. But Deaglan (6) and Theodin (4) are always eager to get their hands on "big kid" projects—especially if it involves electronics, moving parts, or the potential for a really good prank.

The Build (And a Parenting Win)

What amazed me most wasn't the mechanics of the crate itself—which is essentially wiring up a battery pack, a motion sensor, and a motor to drop a spooky spider on unsuspecting victims. The real highlight was the dynamic between the boys.

Usually, a project with small parts and high anticipation ends in a minor squabble over who gets to connect what. But this time? They were incredibly patient. Deaglan gently helped guide Theodin's hands to place the smaller components onto the board, explaining what they were doing, while Theodin sat there being Deaglan's biggest, loudest cheerleader.

As a parent who is always trying to intentionally foster supportive play and give them the emotional tools to work through frustration together, watching them encourage each other through the tricky wiring steps was a massive win.

The Prank

Of course, let's be real: the entire motivation behind building a robotic, dropping spider was to scare their dad. Once the circuit was complete and the motion sensor was calibrated perfectly, we stealthily mounted the whole rig above the front door. We sat in the hallway, practically vibrating with hushed anticipation, waiting for Brad to get home from work.

The door opened. He stepped through. The sensor triggered, and the spider dropped perfectly right in front of his face.

Brad's reaction? Absolutely nothing. Not a flinch. Not a gasp. He didn't even drop his keys.

He just paused, looked at the spider dangling from its string, looked over at the three of us giggling in the hallway, and calmly said, "Nice wiring."

So, the prank was a total bust. But the project itself? A massive success.