The creativity grew as users began to add plexiglass in the side panels so they could create a view inside the computer case. It was popular to install cold cathodes in different colors as lighting inside. As time went by, the creativity and imagination of case modders grew quickly as they found other ways to give their cases a more personalized impression.

The most simple but cool mod is replacing the dim LED's with very bright LED's.
The bright blue ones are often the choice among case modders.
Other mods could be painting the case, adding a plexiglass side panel or custom fan grills. A more difficult mod would be taking off the metal cover from a harddisc and replacing it with plexiglass. This way one could monitor the harrdisc while its operating. All of this led to another level of customized cases, such as modded household objects and homemade wooden cases all with a computer inside . The creativity had no limits and it was easy to find guides on how to do different mods. A growing community on the internet all shared their ideas and case mods. The manufactures of different hardware products like motherboards, graphic cards and sound cards caught in with this growing trend. So we began to see PCB's in different colors which the modders could choose between to match with their case mod theme. For example, having red lighting through the plexiglass together with a red motherboard could give a nice look. We also could mount devices on the cases CD/DVD drive panel which would show the temperature of the different hardware, such as CPU, graphic card and memory, some even features potentiometers to adjust the speed of the fans. There was competitions where one could win modded cases. Case mod products became purchasable everywhere in computer shops where we could purchase products such as bright LED's, glowing power supplies, colored cables, anodized heat sinks, fans with built-in LED's and many other creations.

Still the popularity of case modding is not as great as it has been. Most of today's cases are to some degree premodded available in various colors and generally have a more pleasing look compared to the old Grey cases. Its common that users would rather prefer a modded case than doing own mods. Often these cases have things like plexiglass side panels with lighting from the inside and Blue LED's. We also see these Blue LED's on other hardware, like TV's and DVD recorders.
Case modding can be lots of work but it will always be considered a way to show a user's creativity in an artistic fashion.