You’re going to need your best negotiating skills if you want to convince your significant other to let you add your own Nyan Cat to the kids’ room. This goes a bit deeper than just mounting something on the wall. The LEDs which light up this Nyan Cat installation are actually in the wallboard itself.
Luckily, this is actually a ‘playground for grown-up kids’. [Schinken] and his fellow hackerspace members built it at their location in Bamberg, Germany. It started as a Nyan Cat scarf, which was easy enough to hang on the wall. To make it sparkle they added sixteen LEDs. But you won’t see the wires from either side. A hole was drilled at the location of each diode, with a trench chiseled between them. This makes room for the wires, and was covered with spackle before painting. It turned out to be a pretty simple way to add a focal point to the room, and it certainly has the appropriate level of geekiness for a hackerspace.