Sovietic secret ww2 airplane.

[Flying Pencil]

/serious

First 2 are models, maybe a kit bash to make a cool looking fantasy airplane.

All that after that are American and German homebuilt "ground effect" craft.
While they could "hop" over obstacles up to 100~150 ft high, they are pretty much stuck to float just above the ground.

The Russians actually spent huge sums for military use examples, the "sea monsters", but AFAIK they where all prototypes.