We've already covered the best custom console designs, but there are some special individuals who take things even further.
These people don't just slap a new lick of paint on their consoles, they completely alter them until they look nothing like their original design.
Sometimes they'll build extra decorations and attach them to the console, to transform its appearance. Other times they'll open the entire system up, remove its innards and fit them into a completely different case.
Why? Different reasons. Sometimes it's for practicality - a handheld GameCube can be handy. Other times it's quirkiness - a toaster that plays PlayStation games, for example. And sometimes, just because they can.
Here are some of our favourite extreme console mods. If you've seen better ones feel free to link to them in the comments below.
(note: we've credited the creators where possible - if you spot a mod that's yours and we haven't credited you, let us know and we'll edit the article accordingly)
NES purse This is the work of modder Jeri Ellsworth and features a built-in LCD and two velcro-on NES controllers.
The Nintendomicon This classy effort was made by Redditor JHood_ as a housewarming gift for his brother. Good job it wasn't a copy of 50 Shades Of Grey or it might have overheated.
PS2-shaped NES This NES redesigned to look like a PS2 was built by modder Kotomi. We wonder if video gaming would have been saved had it looked like this in the 80s.
SNES headphones These were made by lyberty5 and are only capable of playing obscure Super Famicom JRPG soundtracks. Nah, not really, they play anything.
GoRetro64 We've seen a few handheld Nintendo 64s in our time, but never one with a case made out of Lego. This one by Chris Bobo looks brilliant but we bet it's as comfortable to hold as a threatened porcupine.
PS2 toaster DeviantArt user Blue-Sky-Complex can play PS2 and pretend to make toast at the same time.
Nintentoaster Speaking of gaming toasters, Richard at StupidFingers.com made this retro effort that plays SNES games.
Halo 3 Xbox 360 This amazing 360 was made by Richard Taylor from WETA Workshops and sold for charity to celebrate one million 360s sold in Australia and New Zealand.
GameCube Revolution There have been numerous handheld GameCubes in the past but most of them have been monstrosities. This, by Ashen, looks slick enough to be a real Nintendo product.
NES in a cartridge Well, this is just confusing. Modders airz gutted a NES cartridge, then jammed the innards of a NES and its controller into it along with a screen to create a fully working handheld NES.
Jumbtron DS DSi XL? Pah! Neil Tew hooked up his DS to two tablet PC screens.
The Super Nintentable Another creation from Richard at StupidFingers.com, this SNES table was built for his staff room at work. Give that man a raise.
SNES PC Putting PC components into a SNES is impressive enough, but turning a cartridge into a DVD-ROM drive is ridiculous. Good work, quangDX and DuPPs.
Nintendo 64 TIE Fighter Modder J Grayson constructed this special N64 after finding the system for and deciding to fuse it with this TIE Fighter toy lying around in his basement.
Dreamcast Millennium Falcon When you've got a TIE Fighter Nintendo 64 doing the rounds, you need to something to take it out with. Oh, and speaking of Star Wars...
Nintendo 64 dual analogue controller This brilliant twin N64 stick was made by a chap called Clarky for a friend who loved a secret mode in Star Wars Episode 1 racer that allowed it to be played with the analogue sticks on two controllers.
R2D2 multi-console Probably the best mod ever. Brian De Vitis bought an R2D2 drinks cooler and stuffed a Dreamcast, N64, SNES, PlayStation, Mega Drive, NES, Xbox and Atari inside it. Incredible.
NES in a shoe This truly is gaming on the go. Presumably works best with Track & Field.
Hemp Wii Remote and Nunchuk These were made by Dhreck and, believe it or not, are fully working controllers. You can even change the batteries.
Peach's Castle Nintendo 64 This sold on eBay for a hundred bucks. We can't see the wife letting us stick it under the telly, to be honest.
Xbox 360 with built-in screen You're never going to be able to read the first Dead Rising's dodgy menus on that screen.
Xbox 360 Slim with built-in screen If you'd rather have a more up-to-date version, here's a slim equivalent by lexxion83, complete with screen and speakers. Wish it still had the old 'blades' OS, though.
Steampunk PC We're pretty much over the whole Steampunk thing but this, made by Jake von Slatt at the Steampunk Workshop site, is one of the few designs we'd love to have.
Xbox 360 laptop Thanks to the magic of water cooling this Xbox 360 laptop from legendary modder Ben Heck has a lower risk of overheating than a regular console. You can also KO doormen with it.
PS3 laptop We can't show off a portable Xbox and ignore this PS3 laptop, also by Ben Heck, which is actually thinner than a launch PS3 but erm, weighs 16lbs.
DCp Take note, Sega: we would buy two of these handheld Dreamcasts made by 'Jake', even though they run off two R/C car batteries. Get them made.
VMU iPod Nano Speaking of the Dreamcast, here's a novel use for its before-its-time memory card - a shell for an iPod Nano.
Wii Unlimited Edition Here's a water-cooled Wii by Danish machinist Martin Neilsen. Necessary? Not in the slightest. Brilliant? God, yes.
Xbox 360 in a car "Yo dawg, I heard you like Forza, so I put an Xbox 360 in your car so you can drive while you drive."
Zombie SNES This is the work of French modder skadrums71 and yes, it still works fine. Even better...
Zombie SNES ...when you turn the lights off, you can make creepy green gas come out of it. That can't be good.
PlayStation 3 Grill When the PS3 was first revealed, lots of people joked that it looked more like a grill than a games console. Guess what happened next.
XCM 360 Hot Rod case This custom case is clever, as it also has a built-in temperature sensor. Its LED light changes colour as the 360 heats up. Blue or green is fine, when it reaches red it's overheating and it's time to turn it off.
Electus 64 Here it is, courtesy of Slipstream, the best handheld 64 mod ever. Burgundy is so underused, if you ask us.
Super Genintari Finally, there's this behemoth from Richard at StupidFingers. It's an Atari 2600, NES, SNES and Mega Drive all built into one. That's just glorious.