In my opinion, all these companies are investments in the future, maximum risk but also maximum reward if these companies make money. What do you think about it, I'm invested in a few myself. You too? Let me know.
Hydrograph clean power
ocean clean power
volatus aerospace
Archer
sivers semiconducters
3D Systems
Latrobe Magnesium
Luminar Technologie
sunyhydrogen
Ur-Energy
All small Small caps but I see possibilities.