Sharing more class tools

I have always loved classtools.net - http://www.classtools.net/
I have used it to create quiz/game for students for their self-paced revision on my Goggle site. I have tried the following other than the name picker and fruit machine which I had introduced below:

1. Categorise the hazards according to the type or the cause - is it climate related or tectonic related hazards:  http://www.classtools.net/widgets/dustbin_6/l2oKq.htm  This was created using the dustbin generator. 

2. View the gallery on the maps and diagrams on plate tectonics: 
http://www.classtools.net/3D/201504_32MEMe This was created using the 3D gallery.

3. Using clues about volcanoes to find out where they are located:

http://www.classtools.net/mapgame/11_BULDZ9  This was created using the mapgame creator.

4. I will be trying out this in future - QR code Treasure hunt -http://www.classtools.net/QR/  
You just need to input the questions and the QR codes will be generated. You can then print the QR codes and place it at different locations. The students will use the QR code reader to find out the questions and answer them.