Reddit user u/DionStabber, one of the moderators of r/AccidentalCamouflage, said that a lot of people love to post their dogs and cats blending in with things in the house. "Often, the camouflage isn't even that convincing, but I think people just like seeing cats and dogs online, it's classic fun Internet content," they told Bored Panda. "You also see people posting things they accidentally lost on a similar surface, like their phones on carpet, iPads on car seats, or clothes on rugs, those ones are always funny."

Speaking of carpet, the Portland International Airport was one of the places where people would (accidentally) camouflage themselves quite often. To reduce the amount of noise created by people walking across the hard terminal floors, the Port of Portland contracted SRG Partnership to design a new carpet for PDX in 1987.

The SRG principal and co-designer of the carpet, John Schleuning, visited several airports before deciding how to create the carpet. SRG steered away from the earth tones traditionally used by airports in the 1980s, incorporating blue and green into their design early on and hoping to evoke "northwest to the core."

Its pattern featured geometric shapes on a teal background, an abstract depiction of the intersecting north and south runways seen by air traffic controllers from the airport's tower at night. Several acres of carpet was installed by the early 1990s.

As time went by, the carpet gained a cult following and even spawned multiple social media accounts. As of this article, more than 115,000 pictures were posted under its hashtag, #pdxcarpet, on Instagram.

The original carpet design was positively received by both Portland residents and airport visitors, eventually reaching "local icon" status. Its pattern was used on a variety of products, including bicycle helmets, socks, and T-shirts. Sometimes people would get one of these items without knowing what it was inspired by, only to enter the airport and discover it for themselves.

But sadly, all good things come to an end. A $13 million replacement of the airport's carpet was announced in 2013, causing a huge stir online that was picked up by local and national media outlets. The Port of Portland also received a large number of comments from local residents who were concerned about the original carpet's future. 

Annie Linstrom, a spokesperson for the port district, confirmed they were investigating recycling options and considering giving away portions of the carpet to locals as keepsakes. She also said that the Port of Portland "understand[s] that people have an emotional connection to the carpet."

The removal of the nearly-30-year-old carpet finally began in January 2015, in front of a crowd of airport employees and the media. The Port of Portland's chief operating officer said: "Normally, we do these ribbon cuttings when we’re introducing a new thing, but it's actually the reverse of that in removing the old carpet. We're going to miss the carpet and we appreciate the community and the love of this carpet."

DionStabber doesn't think they would look specifically to a certain texture or thing to determine what provides the best camouflage. "The best posts often come from not only the objects having similar colors to their backgrounds but also the lighting and composition of the shot being just right," they explained. "Sometimes, two similar camouflages can be posted where one is received really well and the other gets very little attention, and I really think it comes down to those minor factors aligning just right so your brain skips over the object in your field of view, even if it doesn't look technically that similar when you zoom in or pay close attention."

Upon a first glance, an outsider might think the subreddit doesn't get that many posts. But the moderator said that's not necessarily the case. "Firstly, there are probably more people trying to post than you imagine, but they end up breaking the rules and getting their posts removed," DionStabber pointed out. "I try to be extremely lenient with the rules, but there is a lot of content from people just completely misunderstanding the concept of the subreddit or posting camouflage in the literal, intentional sense that I have to remove from the sub to have any bar for quality. In that sense, I guess I maintain a quality over quantity approach, to some extent."