You can install a webserver on your system like apache or nginx (smaller and maybe more suited for something as simple as this) and create a packages directory in there.
sudo apt-get install nginx
The default content dir should be:
/usr/share/nginx/html
Create create some folders for specific architectures or just for the one you use (amd64 for 64 bit or i386)
/urs/share/nginx/html/debs/amd64
You can throw all your packages in there and start the server with
sudo service nginx start
Then create a package list (open a terminal and move to you debs folder) by running this.
dpkg-scanpackages amd64 | gzip -9c > amd64/Packages.gz
Now add the repository to the /etc/apt/sources.list
file this can be done manually,
sudo nano /etc/apt/sources.list
add
deb http://localhost/debs/ amd64/
to the bottom then just run
sudo apt-get update
And you should be able to install from your repository.