Only one device needed.  Use Presentation Mode to mirror your screen on a TV or projector.  Give the artist a subject (you can use the “Catch Phrase” game to generate the subject).  The artist creates a new page in a Squid note, then draws the subject for all to guess.  Pass the device to the next person when it is their turn. At the end, go back through all the pages of the note to see your fun drawings.