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If you’ve been quarantining in a tiny studio or basement apartment, you’ve probably felt a little off. Why? Windows are good for the soul. Go more than a month without enough sun and your neurochemicals can get out of balance, leading to raised serotonin levels, which can have you feeling depressed. Fortunately, there is light (literally) at the end of the tunnel. A new startup from Samsung’s C-Lab incubator, SunnyFive is an artificial window that’s capable of mimicking the full spectrum of natural light, according to a report from Fast Company. 

The product’s color temperature can be controlled with an app, so you can enjoy a warm orange glow at sunrise and a bright white at high noon. You can also change the angle of the light streaming in to simulate different shadows throughout the day. While the company hasn’t announced when the window will be available to purchase, the device gives hope to all those (namely renters) who are spending the majority of their days in a gloomy space. 

Of course, if you own your home, you don’t have to wait to make a change. Altering the shape and size of your existing windows or even making a new hole is no small feat, but if filling your house with maximum natural light will put you in a better mood, it might be worth it. One bright idea: Round out your skylights. These circular openings (like the monolithic one in Sarah Sherman Samuel’s living room) are utterly heavenly. Or in a windowless kitchen, make a long, slim cutout between the counters and bottom of the upper cabinets. There’s no such thing as too many windows—pro renovator Jamie Haller restored the 180-degree ones in the master bedroom of her latest Craftsman remodel so the owners can enjoy good vibes 24-7. 

It’s hammer time: Follow @reno_notebook for easy rental updates, clever DIYs, and tips to nail your next project.