Don't ever be caught without at least two rolls of duct tape in the house. Whether you're using it to indoors or outdoors, to fasten or immobilize certain things, or to just make sure things don't move until you want them to, there's nothing better. And it's economical too.
Also, if you're getting your ass worshiped and you don want to leave your panties laying just anywhere, try leaving them on top of your submissive's head, especially if they're held tightly in place with duct tape.
You'll be surprised how cute the panties look and they're unlikely to fall off. You'll probably get plenty of compliments from guests too!