I have done these kinds of exercises a number of times (and run them too). The term "divergent thinker" probably comes from the works of Dr Edward de Bono. It is similar to creative thinking, though I seem to recall that Edward de Bono disagreed with this.
Yes, I can find more than 20 uses for a paperclip and some of the uses that other people came up with were extremely funny.
Some of the printable ones were:
*use as a substitute picture hook;
* clean your fingernails, ;
* pick your teeth;
* use to scratch out a design on a polystyrene cup;