During my six week gig at the Westport Library, a crowd favorite was the LEGO WeDo SpinArt 'Bot that I created with my son. For the big crowds, however, I adapted a model from @Zackboston to make bigger, messier art.
First, the turntable was geared to spin even faster.
A lasagne pan with a duct tape collar helped contain the mess.
The young and old alike enjoyed using it!
One thing that is exciting about taking something you make into the public is how people use it in unexpected ways. This young man used markers on the paper. It produced distinct spirals.
The senior citizens also had fun with it in their LEGO WeDo/Scratch engineering and programming class.
SpinArt has a low barrier to entry, allows you to experiment with different media, such as ink or paint, and produces random, exceptionally beautiful art. Build a turntable today with your LEGO WeDo kit, program it to spin in Scratch, and start spinning some art!