Inventions

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Across
  1. 4. This was invented first, before solar chargers
  2. 5. This was invented first, before 3D printers
  3. 6. This was invented first, before mini-drones
  4. 8. board This was invented first, before the PS5
Down
  1. 1. This was invented first, before hoverboards
  2. 2. These were invented first, before earbuds
  3. 3. This was invented first, before USB sticks
  4. 7. leg This was invented first, before bionic feet