Commercial Geiger counters can cost hundreds of dollars.
This project is based on work by MAKE magazine contributor Tom Zimmerman.
This basket makes a great case for recycling.
Make an impressively effective low-tech vacuum pump.
I love LED chasers.
Here is a video summarizing the project
Create high-voltage sparks using nothing more than falling water as the source of energy.
Make your own Arduino-controlled color film processor.
Surprisingly simple PVC pipe speakers are clear shining performers.
This project combines high-tech and low-tech materials to introduce the concept of “making” (technology on your time) to primary school students.
Here is a video summarizing the project
I used the time it took to get both my internet and my computer fixed to create my largest project so far.