Creative approach, The game play was satisfaction, I did enjoy scaling them and lead the ball to the goal.
I do miss polish in the game, there's no visually interesting elements besides the "hole" the ball ends up in.
I also think the overall level-design is a missed opportunity, instead of creating 5 small levels, how cool would it be with 1 larger level where you would have to place and scale several objects to get the ball into the hole?