My 9yo son has taken to origami, it's something he has a flare for and was very pleased with this. Will be ordering more soon as he's almost run out and the house is full of paper birds, stars and various other animals and trinkets.
Paper creases well, about the right density, well for a beginner. I made a simple boat with a fold inside out and it worked, even had it floating on water for a few minutes. Each sheet is a different shade of colour.