Foil Balloons. Latex Balloons. Plain Balloons. PLAIN BALLOONS. The balloons can be filled with helium to float or filled with air to attach to any surface. You can fill them with air or helium. <="" span="" style="font-family: Arial; font-size: large;"> <="" span="" style="font-family: Arial; font-size: large;"> <="" span="" style="font-family: Arial; font-size: large;">.