I will start off my admitting I'm not really a tools person. But when I do find something that looks easy and I like I will go for it. I ordered the Giant Roller Doodle in Chevrons and I really like the effect it gave.
I created this page of my son eating his worms and dirt :)
Of course before I tackled the LO I did some sample runs with the roller. I tried ink and paint. I liked the clean look I got the best using paint that had been smeared around a bit so it coated the roller evenly. Then it was as easy as putting it on the paper and rolling.