Turn a classic STEM challenge into a Dr Seuss STEM challenge. Appropriate for young ages, I think it would also be a good introductory STEM challenge for middle school students. It is also great for literacy integration.
If you love simple engineering challenges for kids, you will love this simple challenge of building with straws. Plus over 100 more science activities to try!
3 D shapes inquiry" Can you build a tower using all the figures? from The Curious Kindergarten