I just happened across this article, recommending that discardable output be redirected to /dev/random instead of just thrown into /dev/null

https://pthree.org/2014/12/07/use-dev-random-instead-of-dev-null/

Looks interesting - keen to hear other thoughts.

Stirring up your CSPRNG cannot hurt. Bandwidth seems to be a possible bottleneck, but  if you���re just redirecting somewhat noisy scripts, it���s not going to cause a problem.

On a related note, it���s well worth reading ���Myths about /dev/urandom��� (http://www.2uo.de/myths-about-urandom/ ) as well as the pages it references. Linux���s use of the blocking-when-entropy-is-low /dev/random is somewhat confusing, and at times very frustrating - and for the vast majority of use cases, completely unnecessary. 

( I raise this only because the quoted article above still suggests that you need to keep the ���entropy pool topped off at full���, which is perpetuating the myth)