Idea: random paper - it should be possible, even with a standard dots per inch printer, be able to print paper such that no sheet is ever the same. The pre-printed patterns include: line spacing; line thickness; line width; dots; polygons (regular and irregular); non-horizontal lines; other familiar shapes (e.g. the shapes included in common drawing tools); colours; etc.
Testing the hypothesis: how to measure creativity? One method that has been used before asks a respondent to come up with uses for an object - the more uses the more creative.