Best way to Tie down rope without using bed frame

I am relatively new to doing bondage and different rope ties. Once I have done a bunch of cuff restraints and once I have restrained my partner I typically tie them off to my metal bed frame to create tension so they are secure in place.

I am however getting a new and more expensive frame that I do not want to risk damaging and I'm not sure how else or where else I can tie the ropes off to keep them in place. Any advice on this would be greatly appreciated.

Thank you in advance.