Having lots of discussion with our SSO, who is about to build us a digging area. I'm favouring a raised bed type affair made out of the sort of wood they make planters out of, in a paved area. SSO thinks soil on paving will be dangerous. My plan is for there to be an ordinary flower/vegetable bed near that this could be swept into. I would be very inerested to hear what others have for digging in their settings. I have a bet on with our SSO because he thinks most schools don't have one at all and I'm relying on all of you to prove him wrong on that score!!