Grab the source packages from Ubuntu and build debs with debuild (see the man page). Most of the time, the build dependencies match up well (the dependencies fo

Grab the source packages from Ubuntu and build debs with debuild (see the man page). Most of the time, the build dependencies match up well (the dependencies for the Ubuntu-built debs don't). With pbuilder and friends it's also easy to set up your own PPA-like infrastructure.