Since the days of caves, adorning walls with artistic shapes has been a way to document history, express feelings, and salute the handsomest woolly mammoth in town. Garnish drywall canvases with today's Groupon: for $20, you get $50 worth of decals, custom canvases, and more from Dali Decals online. Though orders placed with this Groupon are ineligible for free shipping, rates start at $6.50 for orders of $50 or more.

Dali Decals offers a wide selection of decals, murals, printed canvases, and modern mosaics that bring formerly inanimate walls to life. All decals are made to order using high-quality vinyl. Peruse the selection of decal standards, or submit your own image for a personalized, customizable addition to any indoor/outdoor wall, or indoor/outdoor house pet. All decals, such as the butterflies and blossoms branch ($45) or the set of six turtles ($19), come with a squeegee and installation instructions to make application as smooth and simple as possible. Anti-adhesive artisans are able to alter their accommodations with printed canvas ($59), which are suitable to hang in an office, kitchen, or any other shamelessly naked room. Products range in price from $10 to $300.