Soapbox Derby Racing
| Min number of participants | 1 |
| Age | 8+ yrs. |
| Min duration | 2 h |
| Cost | Medium |
| Environment | Outdoor |
Building a gravity-powered cart from scratch with your kid, then racing it down a hill against the clock or other teams — a hands-on engineering project that ends in an adrenaline-filled, no-motor race day.