Last year, Ikea made headlines when its philanthropic arm, the Ikea Foundation, helped launch Better Shelter, a line of temporary ­houses—­equipped with features like door locks and solar ­panels—that could be shipped flat and assembled in under four hours, much like the retailer’s popular furniture. But now that the U.N. High Commissioner for Refugees has helped send more than 16,000 of these units all over the world, they’ve taken on a life of their own. Just as DIY experts have found ways to remodel Ikea staples into expensive-­looking furniture, refugees and aid agencies are turning Better Shelter structures into hospitals, reception areas and more. In Greece and on its border with Macedonia, the shelters are being linked together and used as early-­childhood-­development centers; in Djibouti, their walls have been retrofitted with “air conditioners” (plastic bottles cut in half to facilitate air flow). Now designers are trying to revamp the Better Shelters to allow for even more flexibility. After all, says Johan Karlsson, managing director of the Ikea Foundation, “we cannot design a one-for-all shelter.”