There are many nice traditional paper folding models, known to many people, but too often forgotten when they grow older. While origami is traditionally from Japan, several of these older models may have sources that may be found outside Japan.
The boat, which I learned as a child, can be made from the hat. In the pictures below, I should have smiled more.
make the hat, from a paper of e.g. A4-size, or a newspaper. You
can read how to do this.
the model at the inside.
know what happens, it is not so difficult. We move the corners from the
triangle towards each other, while the middle parts of the long side go
far apart. In the end, we have a square.
at one side the square in half, folding the open point below to the top.
fold the other side up in the same way. We again have a triangle.
now we do the same trick again: Open the triangle at the bottom side,
and move to corners towars each other.
We end up again with a square.
a very nice step. There are two points at the upper side. Move them from
each other, and the boat slowly opens/
the boat is ready! It can actually float, although of course it'll sink
after the paper is gotten wet.