There is excellent book "Roadside Picniс" about aliens visited Earth, and they created areas with artefacts and anomalous entities present (like areas with dramatically increased gravity, that could squish careless visitor). People called Stalkers visited this areas to gather artefacts.

As far as i remember this book, useful artefacts were:

1. Forever working battery, that could power a car called Etag
2. Bracelet, that could boost and stimulate regenerative functions of organism
3. Big Golden sphere, that could fulfill one wish.

Probably, this artefacts was used differently by Aliens, but people used them this way.

In general, i think most beneficial devices for humanity will be jump gates, FTL communication system, nanofabricators (that could generate anything from dust), free power generators, etc... But its quite boring, lot of similiar alien devices was already described in many books.

Furthermore, even if we find nearly destroyed alien spaceship crashed into Moon surface, it will give us insights, that we are not alone in universe. It can boost interest in space exploration.

There is an excellent book "Roadside Picniс" about aliens visited Earth, and they created areas with artefacts and anomalous entities present (like areas with dramatically increased gravity, that could squish careless visitor). People called Stalkers visited these areas to gather artefacts.

As far as I remember this book, useful artefacts were:

1. Forever working battery, that could power a car called Etag 2. Bracelet, that could boost and stimulate regenerative functions of an organism. 3. Big Golden sphere, that could fulfil one wish. Probably, these artefacts were used differently by Aliens, but people used them this way.

In general, I think the most beneficial devices for humanity will be jump gates, FTL communication system, nanofabricators (that could generate anything from dust), free power generators, etc... But it's quite boring, a lot of similar alien devices was already described in many books.

Furthermore, even if we find a nearly destroyed alien spaceship crashed into the Moon surface, it will give us insights, that we are not alone in the universe. It can boost interest in space exploration.

There is excellent book "Roadside Picniс" about aliens visited Earth, and they created areas with artefacts and anomalous entities present (like areas with dramatically increased gravity, that could squish careless visitor). People called Stalkers visited this areas to gather artefacts.

As far as i remember this book, useful artefacts were:

1. Forever working battery, that could power a car called Etag
2. Bracelet, that could boost and stimulate regenerative functions of organism
3. Big Golden sphere, that could fulfill one wish.

Probably, this artefacts was used differently by Aliens, but people used them this way.

In general, i think most beneficial devices for humanity will be jump gates, FTL communication system, nanofabricators (that could generate anything from dust), free power generators, etc... But its quite boring, lot of similiar alien devices was already described in many books.

There is excellent book "Roadside Picniс" about aliens visited Earth, and they created areas with artefacts and anomalous entities present (like areas with dramatically increased gravity, that could squish careless visitor). People called Stalkers visited this areas to gather artefacts.

As far as i remember this book, useful artefacts were:

1. Forever working battery, that could power a car called Etag
2. Bracelet, that could boost and stimulate regenerative functions of organism
3. Big Golden sphere, that could fulfill one wish.

Probably, this artefacts was used differently by Aliens, but people used them this way.

In general, i think most beneficial devices for humanity will be jump gates, FTL communication system, nanofabricators (that could generate anything from dust), free power generators, etc... But its quite boring, lot of similiar alien devices was already described in many books.

Furthermore, even if we find nearly destroyed alien spaceship crashed into Moon surface, it will give us insights, that we are not alone in universe. It can boost interest in space exploration.