Construction Party Blowout Party Favors. These colorful blowouts feature a variety of constuction trucks with a black and yellow stripe blowout. This is a classic party favor that everyone loves. Add them on top of a cake plate so everyone has one when the guest of honor blows out the candles! Match with our other Construction Party supplies for a complete party look. One package of 8 Construction Party Blowout Party Favors.