We unashamedly made most of these from an unlimited supply of pieces including Individual Pieces and some custom pieces. A number of individual pieces would have to be purchased to make any of these with a Block Set. But it does provide a sense of what can be achieved. Projects like these come from the minds of 9 year olds, however. You can't expect your 4 year old to do this. It is achieved by playing with your child and finding ways to make things.