[taprun]

Could he start a hacklab? Find an old warehouse, put in some big tables and some equipment then invite people to come in and learn about engineering?

Some people got together nearby, got a government grant and setup a building to do just that. Charge a monthly fee to members and BAM! He's a business owner doing what he loves.

[jacquesm]

Even that takes some seed funding, which he likely does not have (after 7 months of unpaid work).

Bulgaria is not the most rich place in the world and government grants are reserved mostly for those with connections.