Rope Puzzle
Otherwise known as a Baguenaudier, Chinese Rings or a five pillars puzzle, this is a disentanglement puzzle in which a loop must be separated from the pillars.
This sequence of interlocking hoops seems simple enough, but will leave most people scratching their heads. There's no 'one weird trick' to solve it. This. Puzzle. Is. Hard.
This was a good opportunity to try out Tinkercad as an educational Computer Aided Design tool. The basic shapes provided are all you need to make this engaging little puzzle which also requires you to use the ruler function to keep everything neat.
I'm including no solution to the puzzle here, you'll just have to try it yourself.