How can I create a display using permanent balloons that will last for a long time?

To create a long-lasting display using permanent balloons, consider using high-quality, durable balloons made of materials like Mylar or foil. These balloons are less likely to deflate quickly compared to traditional latex balloons. Additionally, you can fill the balloons with a mixture of helium and a special gas called Hi-Float, which helps them stay inflated for a longer period of time. Finally, ensure that the display is kept in a cool, dry place away from direct sunlight and sharp objects to prevent damage and prolong its lifespan.