Even after its clear what's going on in these optical illusion drawings, I get a sense of delight and wonder watching the pencil roll across them.
I've watched this video of optical illusion drawings over and over and still get surprised

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Optical illusion delivers incredible depth without having to cross your eyes and get a headache
Cognitive scientist/psychologist Tom Stafford created this powerful example of chromostereopsis, a fantastic optical illusion where depth is delivered just by using two colors at opposite ends of the light spectrum. From Mind Hacks: There are big individual differences in perception of the effect. This isn't just in terms of strength, although obviously I'm one of… READ THE REST
The Phantom Queen is an awesome optical illusion
Watch this video but get ready to hit pause at the 11-second mark, so the secret isn't revealed before you savor the apparent magic of a chessboard queen that appears only in a mirror reflection of a chessboard. What's more, the queen seems to move of its own volition. How is it done? Press play,… READ THE REST
A driver experienced this astonishingly weird and scary optical illusion in a tunnel
Watch the dashcam video below. This isn't Mario Kart, people, this is reality! (OK fine, it's just water on the side of the road. But still!) READ THE REST
This affordable and stylish tabletop fire pit leaves zero mess
Whether it's winter or summer, there is something so inviting about a fire. It's a great way to create intimate lighting, adds to the coziness of an atmosphere, and enhances the aesthetics of any situation. We haven't even gotten to the s'mores benefits of fires yet! But the reality is that fires can be frustrating… READ THE REST
Get your wine on this summer with 15 bottles from Splash Wines for $50
There's nothing quite like sipping on a chilled glass of wine on a hot summer day to take the edge off and wind down. This summer, instead of spending $10 to $20 per bottle, you can get an assortment of 15 good-tasting wines from Splash Wines for only $50. An amazing way to prepare and stock up… READ THE REST
Turn any room into a far-off galaxy with this epic projector
Even if you've spent hours scrolling through Pinterest and Instagram looking for interior decor ideas to no avail, perhaps something a little "otherworldly" would give your space that something special. Whether it's your kid's room or your living room, a quick transformation doesn't have to be as complicated as you think. Before you start painting… READ THE REST