Still possible! :)

You will need following:

Carpenter's screws (nails)
Bravado. (The more the better)
Confidence.

You can find carpetner's screws inside the tyres of most vehicles that travel in and around building sites. Urban foraging at an all new level. To drill the required holes, use any sharp implement. A serrated bread knife could work.

Ghetto builds.

There's actually a great Australian TV show called "Bush Mechanics" where people stuck out in the middle of nowhere fix old, broken cars with things like PET drink bottles, aluminium cans, and other found items. There should be a crypto-currency mining version. Maybe I'll start one! :P