Before he was able to crawl Sam rolled everywhere.  It was a fast and immediate way of causing as much hassle or damage as possible.  We had to decorate one of the bedrooms and so having a toddler rolling around underfoot slowed us down a bit.  The wallpaper was going up well and we were making good progress.  Sam was staying out of our way, what more could you ask for?  A quick glance around to check on him and...... Oh no, that wallpaper that we had carefully applied was now being pulled off the wall by...... Guess who!!!