Another option for using window decals is as fundraisers, you can print art on them and sell them for your charity or to raise money for your organization. A lot of online companies will print window decals free for you. Whether it be a few as a sample, your first batch or or a certain amount of your first order is free. If you are offered an entire batch for free beware, the free window decals they print may have their company logo on them as advertising for them. Many online printing-services will send you a proof of the custom window decals you want.
Use the advantages of Photo Postcard Printing for marketing.