Flags Decals & Stickers - Page 3 Decals can be easily applied to windshield or any smooth surface such as the body of car or wall. Make a custom die-cut decal, Choose from Thousands of our designs searching by Keyword. Personalize with your text. Get a short advertising message with your website address or phone number in front of other drivers. When was the last time you didn't read a decal on the car in front of you?