Squidgripis an amazing company that manufactures top notch grips for your standard Xbox 360 or PS2/PS3 controllers. Not only will they give your controller a better feel, they'll help keep your hands dry and look sweet if you choose to add your own custom logos!
Condemned Customs is an incredible company that offers customizable paint jobs for any controller. Many options are available including a custom Gamertag or their signature marbling effect. You also have the opportunity to design your own controller with an original image. They truly are one of the best custom controller companies in the entire eSports community with a reputation for quality work and excellent customer service.