Buy some laytex tubing from your local hard ware store and cut the tubing into to smaller 6" pieces. Then take a ring of some sort and fold one end through it and zip tie it so no paint will leack from the pluged end. Fill a hand held spray bottle or bug sprayer with your paint mixture and attach the open end to the sprayer. Start pumping the paint into the tube until your have about 1 inch of tubing left. Pinch the tubing so no paint will escape and pull the tube off of the sprayer. Fold the tubing in half and put a 1/2 washer over it. Stick a pin through the folded tubing and you set. Pull the pin and through it, it will go off on contact.