[Backroads] has put together this nicely detailed writeup explaining how to make a low cost popup prop. He’s using a single pneumatic valve and a home made PVC piston to raise and lower a scary ...

Here's how to create a cute #pvcpipe spider for your backyard this October! 🕷️🕸️ #halloweendecor #halloweendecorations _Discover more DIY Halloween decor ideas here:_ <a href=" ...