Drills for writing
Writeordie
Random-word prompt
Edit yesterday's thing
Find a sentence in yesterday's and diagram and annotate it
Diagram and annotate a quote from another work
Write free rhyme, then find all consonance in it
Write a rhyme scheme, then write 2 bars in it
Clap a meter and write 2 bars in it
Edit somebody else's work, esp scientific or explanatory writing