Try this challenging puzzle made and designed by Jin-hoo Ahn that won a Jury Honorable Mention at the IPP Design Competition (International Puzzle Party) in Kyoto, Japan 2016.
The goal is to create a shape of mirrored symmetry. The solution will have two mirrored identical halves, which would be apparent if you could draw an imaginary line down its centre. All pieces lay flat and not on top of eachother.
There are two (known) solutions, which are included.