I am currently a keen follower of Koosje Koene's Draw Tip Tuesdays. Her advice this week was to draw "what's in front of you". Excellent advice, as I often struggle with the "what will I draw?" syndrome.
So, I looked up from my desk, ignored the dead fly on the window sill, and picked up two stones from my little collection. Most probably from Killiney Beach.
And I just drew them. Stones are a very forgiving subject. As long as you get the shading and highlights convincing enough, it doesn't really matter if your angles and proportions are not spot on. So they are a good way to boost your confidence!