Here is a great coloring page of a Dragon Boat (here).
Crayola shows how to make Dragon Boat Puppets (here).
I printed out two Dragon Boat cut outs for the kids to color, assemble and race (find it here).
Children on that day wear bracelets of five different colors to protect against Evil, they are called the Five Poison or Wu Du charms. It is the favorite decoration of this festival. According to Chinese custom, the "double fifth" is the hottest day of the month, when all the poisonous vapors are in the air, so every attempt is made to harmonize yin and yang so that danger and disease can be avoided. The Five Poison Charm is made up of a snake, centipede, scorpion, lizard, toad and sometimes spider. It was thought that the strength of the 4 poisons would counteract the poison of one. It is embroidered on clothing, stamped on cakes, engraved on charms, and used for decorations. You can read more about the Five Poisons here and print a a Five Posions coloring sheet here.