The bricks that move side to side can be useful. They hit you really hard and they can be used to get thrown to different locations, preferably the end. Here is a video that shows the brick boost in action to skip to the end of level 13.

If you jump on an enemy at an angle towards the place you want to land, this happens, so enemies are useful too!

Pretty self explanatory really, in Crazy Ball Adventures, you hit buttons to open/unlock doors. You can just jump around them like this:

One of the things you really need to do to go fast. If you hold jump and forward at the same time, you just keep gaining momentum. Watch this run, you'll see I do it a lot: