If it's time to retire your box spring, don't throw it to the curb. The mattress' accompaniment can be useful in many ways around your home and garden thanks to its wooden frame. Any box spring with a wooden frame will work well for these upcycling hacks, from one that's a twin to another that's king-sized. Even box springs made for baby beds can function as mini versions of these home DIY projects and are ideal for small spaces. It is also perfectly fine if the box spring's fabric lining and stuffing are ripped, stained, or missing.