We had a Nice set-up for the #3dprintingday open house.
Besides the table full of 3D prints to see, and 2 printers working all day. We had some Godiva's (chocolate) coffee and short bread cookies available courtesy of my Wife.
The printers made 20 bent tree prints over the course of the event.
I had their start times offset so one was printing while the other was being cleared and restarted.
The kids got involved in the pictures.