APTonCD is a tool with a graphical interface which allows you to create one or more CDs or DVDs (you choose the type of media) with all of the packages you've downloaded via APT-GET or APTITUDE, creating a removable repository that you can use on other computers.
APTonCD will also allow you to automatically create media with all of your .deb packages located in one especific repository, so that you can install them into your computers without the need for an internet conection.
Open the terminal and run the following command to install it: sudo apt-get install aptoncd
Once installation is complete, launch it from System → Administration → APTonCD.
Click Create to copy all the necessary packages from the /var/cache/ directory and displays it in a pop up dialog (below). Here you get to decide if you need to add any additional packages stored in an alternate location or remove some of the already selected packages. There is also an option to set the target media as a CD or DVD and the location where you want to save the resultant image.
Once the choices are made, Insert your CD/DVD and click Burn, it will start to copy all of your selected packages to the removable disk.