To make a meta-package you just need to make a deb package that has the packages you want included listed as dependencies.
I've uploaded the folder for a sample meta-package. It only has a 'sample-metapackage/DEBIAN/control' file. If the dependencies in this file were replaced with the packages you want included apt-get would install those when you install the metapackage.
To turn these files into a .deb package just
Make sure to not have the trailing / after the 'sample-metapackage'.
sudo dpkg --build sample-metapackage
My first suggestion to go into the meta package would be Qalculate!, which I've put as a dependency in the sample meta-package.