For the rectangular frame, you'll need dimensional lumber, such as 2 by 6 or 2 by 4 boards. Use lag bolts (e.g., ¼-inch bolts, 3 ½–4 ½ inches long) for connecting the frame to the wall studs.

Allewie Queen Bed Frame in Brown, $153 (was $300) at Walmart. Courtesy of Walmart. This bed frame is constructed from metal and wood and can support up to a whopping 900 pounds.

One quick Amazon search of “grey queen bed frames” and I found the bed frame of my dreams: Allewie’s Queen Modern Platform Bed Frame. Best of all? It costs less than $200.