Remember to put your work down sometimes and rest your wrists.
Unfortunately my son dislocated his shoulder at school, which throw many a good plan out of the window. Luckly when it popped out, he managed to pop it back in again - though admitting he felt rather ill and faint at the time.
So very quickly here are some photos of my projects you can see more than 20 minutes worth of work.
The Granny Ripple
Admittingly I didn't actually have a pattern so I have tried my best with it and these where my practice pieces
The piece above is large enough for a King Sized bed and hence the RSI! 4 Hours work and not enough rest - be warned!