Taking a look at the BRIMNES measurements (Queen, pictured below), the suggestion seems feasible. With the legs removed from both headboards and stacked, Sheila will end up with a 5-foot tall headboard.
With the bed frame and mattress, she may end up with over 3 feet of headboard above the mattress. Not a bad height at all. And with double the storage.
Idea 2: Turn the head on itself
Another idea I had was to turn the BRIMNES headboard upside down, with the legs in the air. This solves the pillow falling through the gap issue.
To finish the top portion, she can use wood and trim to create open shelving at the top. Like so: (See lines in orange). Please excuse my bad sketch.
The closest photo I could find online is this bed from Home Depot.
Sheila can then wall mount the BRIMNES headboard at the level she likes. If she rather not fix it to the concrete wall, she can construct legs (or use ready made ones) to convert it into a free standing version.
Hacking may compromise the structural integrity of the item, so please be aware of the risks involved before modifying or altering any IKEA product. Alterations and modifications will also void any warranties or return policies you may have received from IKEA. IKEAhackers.net is not liable for any product failure, injury or damage resulting from the application of suggestions, ideas and hacks featured on this site.
Jules Yap started IKEAHackers.net in 2006 as a personal blog to showcase the most impressive IKEA hacks from all over the world. Since then, she has learned a lot more about power tools and DIY. Her site has helped thousands modify IKEA furniture with step-by-step tutorials, craft projects and home styling.