Find an old non powesteering, lap belt, high step school bus, open a box of Legos and throw them inside. Next take a woodchipper and blow an entire pine tree in the back, mixing the Legos up in the mulch, filling the bus to the roof. Drive the vehicle through your neighborhood, stopping at each street, find a red Lego and put it at the street sign. Repeat finding different colored Legos, for different streets, while sifting through mulch. Do this in under 9.5 hours and you might be able to do the job.