From the very cool Low-tech Magazine, the Chinese wheelbarrow:
The Chinese wheelbarrow – which was driven by human labour, beasts of burden and wind power – was of a different design than its European counterpart. By placing a large wheel in the middle of the vehicle instead of a smaller wheel in front, one could easily carry three to six times as much weight than if using a European wheelbarrow.
Read the rest here. So who will be the first to make one of these with an old bicycle wheel?