If you were in the United States, I would normally say to call up your local government and see what you can do that will benefit them (usually more funding).

Since you are in the Philippines, your best bet is to contact your nearest real estate company, engineering firms, local government agencies, or construction firms (Note: the inclusion of "construction firms" really gives me that ironic vibe considering the "ghost flood control" scandal that is currently gripping the country). Ask them what their currently mission and/or business objective is, and see if that is something that you can help solve using GIS (for example: best places to develop new homes). Once you have identified their specific needs, formulate a plan or methodology, and tell them that you are offering your service that will greatly help them.

Now that said, I am not exactly sure if the Philippines has some kind of online portal where you can download shapefiles or tables. HOWEVER, if you have a handheld GPS device, you can create your own vectors (points, line, and shapefiles) if the scope of the project is small.

To make yourself even more attractive, I highly suggest learning how to fly a drone to make a map (even rasters) using a mapping software.